# Astronomy Explained

> Universe, now!


## Posts

- [Hypernova vs Supernova: What's the Real Difference?](https://astronomyexplained.com/hypernova-vs-supernova-whats-the-real-difference/): The universe is a chaotic place; a lot of violet things happen. Black hole formations, stars dying, and many more. Two of those violet events are supernova and hypernova. But what is the difference between hypernova vs supernova? Aren’t they the same thing? Yes and no. They both happen because a star dies. However, the difference is in how big and violent they are when they happen. When a star dies, depending on its size, it either explodes as a supernova or a hypernova. A supernova can outshine its entire host galaxy when it happens, and it lasts a few weeks. […]
- [What is a Primordial Black Hole? Big Bang Black Holes](https://astronomyexplained.com/what-is-a-primordial-black-hole-big-bang-black-holes/): Most black holes need a star to die first. A massive star collapses, the core implodes, and a black hole is left behind. That is the version we are most aware of. It is well understood, well observed, and backed by decades of data. But that is not the only kind of black hole. There is one that doesn’t need a star to die: a primordial black hole. It just needed a moment of chaos after the Big Bang. Depending on who you ask, you may hear all kinds of answers about what is a primordial black hole: invisible, ancient, and […]
- [What is a White Dwarf Star? A Beginner's Guide](https://astronomyexplained.com/what-is-a-white-dwarf-star-a-beginners-guide/): Each type of star could be very different from one another; some are big, some are small, some die in a burst, and some die quietly and slowly. When those that die slowly and quietly come to the end of their life, they puff their outer layer off and leave a tiny, incredibly dense core. That leftover core is a white dwarf star. It will not keep burning like a normal star, but it will stay hot for a staggeringly long time. This is the short answer to what is a white dwarf star. But of course, like almost everything in […]
- [What is a Pulsar? The Cosmic Lighthouse](https://astronomyexplained.com/what-is-a-pulsar-the-cosmic-lighthouse/): In 1967, Jocelyn Bell Burnell, a PhD student, was going through reams of radio telescope data when she spotted a repeating signal. It was repeating every 1.33 seconds with almost mechanical precision and was too consistent and regular that her team jokingly named it LGM- 1 (Little Green Men). It was probably one of the first real moments where we thought we encountered alien communication, but it wasn’t. This was a pulsar, a dead star about the size of a city, sweeping a beam of radiation across the universe with the precision of an atomic clock. But what is a pulsar? […]
- [What is a Parallel Dimension? How Real Are They? ](https://astronomyexplained.com/what-is-a-parallel-dimension/): If you have ever watched Doctor Who or a similar science fiction movie about space, you probably heard of parallel dimensions. It’s depicted differently in each movie or series; some are a copy of our universe where we made different decisions. Others are different universes completely. But what is a parallel dimension? There is a real version where scientists are discussing and checking for possibilities. The real idea behind parallel dimensions is that every decision made in the universe opens a separate universe where the decision that wasn’t made is made. Like, if you toss a coin and get heads, you […]
- [Wormhole vs Black Hole: Are They Really That Different?](https://astronomyexplained.com/wormhole-vs-black-hole-are-they-really-that-different/): Wormholes and black holes have a solid hold in pop culture. Almost every sci-fi movie and show that talks about space will mention either both or one of them. Are they the same thing, though? Not at all, a wormhole vs black hole are very different things. Sometimes, as theories suggest, they may act like portals to somewhere else (we don’t think that’s real for black holes but some theories suggest it), but that’s about it in terms of similarities. Check this article out, too: Article Dimension: Are They Real? Historically, they share the same mathematical DNA, coming from Einstein’s equations […]
- [Alternate Dimension: Are They Real?](https://astronomyexplained.com/alternate-dimension-are-they-real/): If you open any sci-fi movie about space or astrophysics, there is a likelihood that you will see a mention of an alternate dimension on it. They are everywhere, and both scientists and hobbyists in astrophysics are interested in alternate dimensions. Superheroes slip between realities, parallel universes fork off at every decision, and hidden worlds exist just beyond our perception. It’s the ultimate creative sandbox. But how real are those depictions? Is there a scientific background to it, really? Are alternate dimensions real? What is the difference between parallel universes and alternate dimensions? Check this article out, too: Do Black Holes […]
- [Do Black Holes Evaporate? Are They Always There?](https://astronomyexplained.com/do-black-holes-evaporate-are-they-always-there/): Black holes have always been interesting to us humans, especially the scientists. But it also attracted the attention of those who are not interested in science. Interstellar movie is one of those things that made people even more curious. We picture black holes as eternal, cosmic vacuum cleaners that sucks everything in. Scientists also thought that once a star forms and dies and creates a black hole, it was permanent. But do black holes evaporate? Do they really live forever, or do black holes die? The universe rarely follows such simple rules. Check this article out, too: Could Black Holes Lead […]
- [Could Black Holes Lead to Parallel Universes?](https://astronomyexplained.com/could-black-holes-lead-to-parallel-universes/): There are a lot of mysterious things in the universe. Some of those things, we can try to understand because we can see the entire thing. But some things, like black holes, are mostly a mystery. We can’t even see the thing; we barely generated an image of one only recently. As you can imagine, there is no way for us to know what a black hole leads to. There are many theories, one of them is could black holes lead to parallel universes. When you pass the event horizon and go to the bottom – which we call the singularity […]
- [Where is the Andromeda Galaxy?](https://astronomyexplained.com/where-is-the-andromeda-galaxy/): We humans live in the Milky Way Galaxy, and our Earth and the entire Solar System are a very small portion of the Milky Way Galaxy. Outside of this galaxy, there are trillions of others. The closest one is the Andromeda Galaxy. It’s the most distant object visible without a telescope from Earth. But do you know where is the Andromeda Galaxy? How far is it from the Milky Way, specifically from Earth? Because we can see it (when the timing is good and there aren’t a lot of other lights) from Earth, it must be close. Well, sort of. Check […]
- [The Einstein Rosen Bridge: Wormhole Theory](https://astronomyexplained.com/the-einstein-rosen-bridge-wormhole-theory/): If you fold the space like a sheet of paper, two parts of the very opposite side of the universe would touch each other. That’s the image behind the Einstein Rosen Bridge, the wormhole theory as many of us know it. Imagine taking a shortcut across the universe? For those reading this for the first time, it may sound like a wild theory, but it’s supported by Albert Einstein’s and Nathan Rosen’s math written in 1935. The essence was looking at what Einstein’s equations may allow if they are pushed to extremes. Check this article out, too: What is Big Rip […]
- [Nebula and Galaxy: What's the Difference](https://astronomyexplained.com/nebula-and-galaxy-whats-the-difference/): The Milky Way galaxy has somewhere around a few hundred billion stars. Some of those are stars like our Sun, and those stars die. When they die, they leave behind a glowing cloud, which we call a nebula. Essentially, a nebula is inside a galaxy and holds those nebulae plus billions of other things like black holes, stars, and planets. You may understand that nebula and galaxy are two different things from this fact. But if you are not into astronomy, it’s normal to confuse them or not know the difference between a nebula and galaxy. The differences are quite a […]
- [What is Big Rip Theory: Will the Universe Expand Forever?](https://astronomyexplained.com/what-is-big-rip-theory-will-the-universe-expand-forever/): Everything dies in our universe. Sometimes after millions of years, sometimes billions of years, they were born. There is an end to it, whatever it is – black holes, planets, galaxies, stars. The universe also has an end. The one we are living in will throw in the towel just like everything else. The universe expands, and that expansion could eventually shred everything. That’s where the big rip theory starts. So, what is big rip theory all about? Check this article out, too: What is Alternate Reality? One fact about the universe is that it isn’t just growing, it’s accelerating. During […]
- [What is Alternate Reality?](https://astronomyexplained.com/what-is-alternate-reality/): Most science fiction movies and TV shows focusing on stuff in space mention alternate realities, multiverses, and bubble universes. These are interesting topics that are quite different from each other (although many think they’re the same). But the allure is the thought that there is another version of you somewhere else. Today, I’d like to focus on the alternate reality and discover what is alternate reality. It’s an exciting topic, but we rarely get to the bottom of its science. The book (and later show) “Dark Matter” did an exceptional job of portraying this. Definitely recommend it. Check this article out, […]
- [What is Beyond the Observable Universe?](https://astronomyexplained.com/what-is-beyond-the-observable-universe/): I had a lengthy article about how big is the observable universe and what is the observable universe previously. In both of these articles, while I was explaining the main topic, I briefly touched upon what is beyond the observable universe. It’s a tough question because we don’t know. It’s time to dive into why we don’t know what could be beyond the observable universe, and what we can expect. As you were reading both of these articles, I’m sure you also wondered if there is more to the universe than the part we can see. And what is that? The […]
- [What Is a Planetary Nebula?](https://astronomyexplained.com/what-is-a-planetary-nebula/): When a medium-sized star like our Sun gets old and dies, it sheds its outer layers in a glowing gas. We call that gas, planetary nebula and yes it has nothing to do with planets. Why do we call it that, and what is a planetary nebula? Is it just that gas? Well, not really. There is a history behind the name and the entire formation of a planetary nebula. The real reason is that early astronomers named this nebula like this because it had a planet-like appearance in the telescopes. Check this article out, too: Are Wormholes Real? Separating Fact […]
- [Are Wormholes Real? Separating Fact from Fiction](https://astronomyexplained.com/are-wormholes-real-separating-fact-from-fiction/): You will hear about wormholes in some science-fiction books you read or movies (yes, you, Interstellar fan) and shows you watch about the universe. And it will follow with some complicated scientific explanation about what is a wormhole. They look good there, but are wormholes real? What if cosmic shortcuts exist, and they don’t just live in books, movies, or shows? If you read my previous article about what is a wormhole, you already know that wormholes are basically theoretical tunnels through space and time. Einstein and Nathan Rosen first proposed them, and they are known as “Einstein-Rosen Bridges.” You just […]
- [What Is a Nebula Made Of?](https://astronomyexplained.com/what-is-a-nebula-made-of/): By now, we know that space has a lot of gas, dust, and darkness. A nebula is just one of the types of clouds that you see in the sky. It contains pieces in it inside the cloud. But they are more than just a “cloud.” What is a nebula made of, and what is it? In short, a nebula is made of gas, dust, and a whole lot of space. These things are the leftover bits from stars that exploded or the raw ingredients for stars that haven’t even been born yet. They’re like nature’s recycling bins, except they glow. […]
- [Antimatter vs Dark Matter: Similarities and Differences](https://astronomyexplained.com/antimatter-vs-dark-matter-similarities-and-differences/): If you know a little bit about astrophysics and are interested in astronomy, you probably know that there are invisible things that shape the entire universe. Certain particles vanish in a flash of energy when they meet their counterparts, and many more interesting things. Dark matter and antimatter are two of those invisible things. Both sound like something straight out of a sci-fi movie. They are two of the most fascinating mysteries in modern physics and are different things. But how do you compare antimatter vs dark matter? Dark matter is unseen but exerts a powerful gravitational pull that holds galaxies […]
- [How Big is the Observable Universe?](https://astronomyexplained.com/how-big-is-the-observable-universe/): Ever looked up at the night sky and thought, “Okay, but… how big is all this, really?” what exists beyond the edges of what we can see? The cosmos, the part we can see, is called the observable universe, so we try to understand how big is the observable universe. The distance is far beyond what we can comprehend from our brains here on Earth. Sure, in numbers, we can say how big it is. But the reality is that it’s just incomprehensible. The observable universe is a bubble centered around Earth, defined by the reach of light over billions of […]
- [What is a Solar Nebula? Formation & Facts](https://astronomyexplained.com/what-is-a-solar-nebula-formation-facts/): Have you ever wondered how our solar system came into existence? How did our whole solar system get started? Through something that we call a solar nebula. But what is a solar nebula? A massive cloud of hydrogen gas and dust that set the stage for everything we see today. About 4.6 billion years ago, a huge, messy, immense cloud collapsed under its gravity. That’s the solar nebula. It flattened into a spinning disk, and most of the material gathered at the center formed the Sun. The remaining dust and gas eventually turned into our solar system’s planets, moons, and other […]
- [What is a Wormhole? Your Ultimate Guide to Wormholes](https://astronomyexplained.com/what-is-a-wormhole-your-ultimate-guide-to-wormholes/): Have you ever thought about skipping the long, boring journey through space and just going to the other side of the galaxy like in a second? Probably everyone interested in astronomy did. And it could be possible – with a wormhole. Imagine a tunnel-like structure connecting distant points in space-time to create a faster route in the universe. That’s what is a wormhole. Check this article out, too: What is the Observable Universe? Explained Simply Today What is a wormhole? Imagine space is a giant piece of paper. If you want to travel from one end to the other, you could […]
- [What Is the Observable Universe? Explained Simply Today](https://astronomyexplained.com/what-is-the-observable-universe-explained-simply-today/): Have you ever wondered what the limit of what we can see out there in the sky is in the universe? If you did, the answer is both simple and complex. This correlates with what is the observable universe question. The observable universe is the limit of what we can see. In simple terms, it’s the part of the universe we can see—the region from which light has had time to reach us since the Big Bang. Check this article out, too: Could Life Exist Without Dark Matter? Because light travels at a finite speed (about 300,000 km per second), we […]
- [Could Life Exist Without Dark Matter?](https://astronomyexplained.com/could-life-exist-without-dark-matter/): Dark matter makes up about 83% of the universe’s matter. That means 83% of the universe is invisible, but dark matter is crucial to the universe’s and life’s existence. Dark matter keeps galaxies together and helps them form stars. Only about 5% of the universe is made of normal matter. Dark matter’s gravity is important to create stability for stars and planets. So, dark matter keeps things together and forms stars, planets, galaxies, and the life we know it. What would have happened if dark matter had never existed? Could life exist without dark matter? Check this article out, too: Comet […]
- [What is a Nebula? Stuff our Eyes Can't See](https://astronomyexplained.com/what-is-a-nebula-stuff-our-eyes-cant-see/): Did you know that some nebulae stretch hundreds of light-years across? Imagine a cosmic artist splattering clouds of gas and dust across the universe like an interstellar Jackson Pollock painting. If you find yourself asking what is a nebula, well, that’s a nebula. They are one of the most breathtaking and mysterious objects in space. These glowing clouds of gas and dust are more than just beautiful sights in the sky. This is where stars are born, the universe gets shaped, and stars die. Nebulae are in all shapes and sizes. They form the building blocks of stars, planets, and everything […]
- [What is Neutrino Astronomy?](https://astronomyexplained.com/what-is-neutrino-astronomy/): Did you know neutrinos are almost as common as photons in the universe? Neutrinos are the universe’s ultimate escape artists. They’re tiny, nearly invisible, and zoom through everything—your body, the Earth, even entire galaxies—without stopping. Every second, trillions of them pass through us without touching us. Did you feel that? Nope. That’s because neutrinos barely interact with anything. What is neutrino astronomy? This. It’s the study of neutrinos. Check out this article, too: How Does a Neutron Star Form? Density Bomb So, what is neutrino astronomy? It’s a way of studying the cosmos using these ghostly particles instead of regular light. […]
- [How Does a Neutron Star Form? The Density Bomb](https://astronomyexplained.com/how-does-a-neutron-star-form-the-density-bomb/): Neutron stars are ridiculously dense and hot (see how hot they actually are in my article: here). Imagine cramming the entire Sun into a ball just 20 kilometers wide. That’s like squeezing a mountain into a sugar cube. A teaspoon of matter weighs as much as a billion tons. This isn’t science fiction but the world of neutron stars. Only about 10 kilometers wide, these cosmic giants have more mass than our Sun. But how does a neutron star form? Does it fit into what we know about physics? Check out this article out, too: Is The Moon a Star? Our […]
- [Comet vs Asteroid: What's the Difference?](https://astronomyexplained.com/comet-vs-asteroid-whats-the-difference/): We all constantly see things flying in the sky. Most of the time, they are planes, but sometimes, they are not. Sometimes, you may see objects flying way faster and smaller than the usual planes flying over our heads or the stars that are always there. Well, they are coming from space, falling into Earth. Generally, they are either asteroids or comets. People may think they are very similar – and indeed, they have similarities. But the comet vs asteroid discussion is much more than that. Check this article out, too: What are Binary Star Systems? What are comets and what […]
- [What are Binary Star Systems?](https://astronomyexplained.com/what-are-binary-star-systems/): Did you know over 50% of all stars in our Galaxy are in pairs or groups? Over 50% is a significant number! We call these binar star systems – if they are in pairs. You see how common binary star systems are? But what are binary star systems? Why are they so frequent and are they important? Check this article out, too: History of Dark Matter: Journey Through Time Binary star systems have two stars orbiting around a shared center of mass. These pairs move through space, held together by gravity. The Washington Double Star Catalog lists over 100,000 pairs of […]
- [How do Stars Form? The Science Behind](https://astronomyexplained.com/how-do-stars-form-the-science-behind/): Have you ever looked up at the night sky and wondered, how do stars form? How and when did the first star form? Stars might seem like magical points of light, but their journey starts in a real place—huge, cold clouds called molecular clouds in space. The tale of star birth is as ancient as the universe itself, and it’s always changing before our eyes. Check this article out, too: Dark Matter Experiments: The Search For Hidden Mass Think back to billions of years ago. Vast interstellar clouds floated through space. These cosmic nurseries were the seeds of future stars. As […]
- [History of Dark Matter: A Journey Through Time](https://astronomyexplained.com/history-of-dark-matter-a-journey-through-time/): “We are a way for the cosmos to know itself,” said Carl Sagan about our search towards the cosmos. Dark matter is a big part of the cosmos, which takes up 85% of our universe. It’s an invisible matter that we can’t see, and that’s why it’s always intrigued everyone. The history of dark matter – not as long as other parts of the universe that we study – is full of mysteries from day one. Check this article out, too: Dark Matter vs Dark Energy: What’s the Difference? Imagine a universe with five times more invisible matter than we can […]
- [Dark Matter Experiments: The Search for Hidden Mass](https://astronomyexplained.com/dark-matter-experiments-the-search-for-hidden-mass/): Dark matter has been a mysterious object for decades for us. We’ve been trying many different things to detect dark matter with different dark matter experiments, whether directly or indirectly, but there hasn’t been a lot of success. Some of the dark matter experiments have brought us closer, though. After all, 85% of all matter in the universe is dark matter. We should be able to see or detect it one way or another. Check this article out, too: Dark Mattter vs Dark Energy: What’s The Difference? Most of these dark matter experiments use particle physics experiments. Fermilab hosts some of […]
- [Gravitational Lensing and Dark Matter Explained](https://astronomyexplained.com/gravitational-lensing-and-dark-matter-explained/): When you look through a telescope and see stars and galaxies across space, there is a reason why that happens: gravitational lensing. It shows us many things, but perhaps the most important is that it can show us the things we can’t see, like dark matter. Gravitational lensing and dark matter, when combined with Einstein’s general theory of relativity, can give us the answer to what dark matter is (check out my cool post about what is dark matter – at least to the extent we know). Check this article out, too: How How are Neutron Stars: The Density Machines Gravitational […]
- [How Hot Are Neutron Stars: The Density Machines](https://astronomyexplained.com/how-hot-are-neutron-stars-the-density-machines/): I’d like to call Neutron Stars density machines just because they fit so well into what they are. But neutron stars are not just about high density, they are also extremely hot. If you’ve ever wondered about extreme temperatures beyond Earth – neutron stars are one of the hottest spots in the universe. These stars, left over from supernovae, start with surface temperatures over 10 million Kelvin (99999726 Celcius). But how do they stay hot without nuclear fusion, and how hot are neutron stars exactly? Chek this out, too: Dark Matter vs Dark Energy: What’s the Difference? Neutron stars are incredibly […]
- [Dark Matter vs Dark Energy: What's the Difference?](https://astronomyexplained.com/dark-matter-vs-dark-energy-whats-the-difference/): Ever wondered about what makes the universe expand and galaxies spin? What’s out there more than we see? Everything in the universe, from the planets to the stars are made of matter. We see a little percentage of this matter and the rest is invisible matter, called dark matter and dark energy. Dark matter and dark energy play key roles in the universe, and they are in a “cosmic war.” Like, dark matter vs dark energy: war of two sides. They are mysterious forces that pull and push the universe in different ways. Only about 5% of the universe is made […]
- [What is Dark Matter Annihilation?](https://astronomyexplained.com/what-is-dark-matter-annihilation/): Ever wondered what happens when dark matter particles collide with each other? We call this dark matter annihilation. It’s an interesting process because dark matter doesn’t interact with anything. We can’t see it, and we can’t even feel it out there in the universe. The only process they interact with something maybe with each other, and that could be groundbreaking. Check this out, too: Dark Matter and Black Holes: What’s the Connection? Dark matter makes up 85% of the universe’s matter. Dark matter particles can even pass through the Earth or Sun without a trace. However, scientists think that when two […]
- [How to Detect Dark Matter: Can We?](https://astronomyexplained.com/how-to-detect-dark-matter-can-we/): Imagine a world where 85% of its mass is invisible. This isn’t from a sci-fi movie—it’s real in our universe, it’s dark matter. It’s invisible, and we don’t know how to detect it. None of the direct detection experiments have found anything so far. That’s why we still don’t know how to detect dark matter directly or indirectly. Trying to detect dark matter is like trying to hear a whisper in a busy city. Many groups, organizations, and scientists are trying to find the first direct or indirect glimpse of dark matter. For example, DarkSide-20k uses 50 tons of liquefied argon […]
- [What is Dark Matter Made Of?](https://astronomyexplained.com/what-is-dark-matter-made-of/): What if most of the universe is made of something we can’t see or touch? That’s dark matter. Dark matter makes up about 25% of the total mass in the universe but we can’t observe dark matter directly or indirectly. That’s five times more common than the normal matter we see, interact with, and detect. We see dark matter’s effects—gravity pulls on galaxies and bends light from stars. Among many questions we have about dark matter, one of the big ones is what is dark matter made of? How can it take up so much mass in the universe without interacting […]
- [Dark Matter and Black Holes: What's the Connection?](https://astronomyexplained.com/dark-matter-and-black-holes-whats-the-connection/): Did you know that for every kilogram of stuff we can see, there are 5 kilograms of dark matter? This odd fact points to a big puzzle in space, which we discovered relatively early in the history of the universe’s research. Could dark matter and black holes be connected since they are both very mysterious and their existence may explain some of the stuff? Dark matter is all around us, yet we can’t see it. It pulls on things we can see but stays hidden. Because we can’t see, feel, or measure them, it’s hard to understand dark matter and dark […]
- [How big is a Neutron Star?](https://astronomyexplained.com/how-big-is-a-neutron-star/): Can a tiny speck in space weigh more than a mountain? Neutron stars can. They are a cosmic mystery that has huge amounts of dense but is essentially small in size. Imagine a city-sized object so dense a sugar cube of it would weigh 1 trillion kilograms on Earth. That’s how big is a neutron star. The level of size and mass neutron stars has is something we don’t have here on Earth. That’s why we don’t have its concept in our minds. These stars are incredibly dense, with a mass over half a million times Earth’s. However, they are not […]
- [What is Astrophysics, and Why It Matters?](https://astronomyexplained.com/what-is-astrophysics-and-why-it-matters/): Earth is 4.54 billion years old, our Sun will potentially explode in 5 billion years once it runs out of hydrogen, and the Cosmic Microwave Background is the oldest light in the universe. We know all this and much more about the universe thanks to astrophysics. When you ask what is astrophysics, this is the answer. Astrophysics explores the universe deeply, using physics and chemistry to understand stars, planets, and galaxies. Check this out, too: Astronomy vs Astrophysics: What’s the Difference? Astronomers look to the sky to see what’s out there, and astrophysics makes sense of what we see. Astrophysics also […]
- [Astronomy vs Astrophysics: What is the Difference?](https://astronomyexplained.com/astronomy-vs-astrophysics-what-is-the-difference/): Do you know we mapped 1.5 billion celestial objects in the Milky Way galaxy over 13 years? The VISTA telescope at the Paranal Observatory in Chile was used for this. This huge survey started in 2010 and collected 500 terabytes of data, revealing the details of our Galaxy. The study was published in Astronomy & Astrophysics and involved astrophysicist Roberto Saito from Brazil’s Universidade Federal de Santa Catarina. This was a mix of astronomy and astrophysics working together-a great example if you ask me. You see how astronomy and astrophysics are used together? But what is the difference between astronomy vs […]
- [What is the Fermi Paradox - Where Are All the Aliens?](https://astronomyexplained.com/what-is-the-fermi-paradox-where-are-all-the-aliens/): One thing that attracts people to the universe, planets, and what’s out there is the potential of finding ‘aliens.’ Everyone is wondering whether we are alone. Back in the time, Enrico Fermi asked, ‘Where is everyone?’ that created the Fermi Paradox. What is the Fermi Paradox? What does it ask and what paradox is it? The Fermi paradox basically looks to answer the question of where the aliens are. Its premise is that there have to be aliens, but we can’t find them because the universe is so vast, and we don’t have evidence to support the alien claim. Our galaxy […]
- [What Is a Gravitational Wave? Ripples in Spacetime](https://astronomyexplained.com/what-is-a-gravitational-wave-ripples-in-spacetime/): When two black holes collide, they send ripples through space at the speed of light. We call these ripples gravitational waves. It was a theory up until 2015, when scientists detected the first gravitational wave. We never knew if our theory was correct until then, but we now know that it is real. But what is a gravitational wave? How does it affect our universe, galaxy, and planet? Check this out, too: How Far is the Closest Black Hole to Earth? Essentially, what a gravitational wave is that these waves are tiny disturbances in spacetime. They are incredibly small, so even […]
- [How Far is the Closest Black Hole to Earth?](https://astronomyexplained.com/how-far-is-the-closest-black-hole-to-earth/): One of the most mysterious and interesting things out in the universe to us humans is the black holes. There are many black holes and we can’t really see them, we can only try to understand where they are, basically trying to feel them. They destroy and eat everything they come across. Planets, galaxies, stars, and anything else. You might wonder how far is the closest black hole to Earth? Does it pose a threat to our planet? We can’t see black holes, that’s true. So how do we know how far is the closest black hole to Earth? We can’t […]
- [What Is a Black Hole Made Of? Source of Space's Mystery](https://astronomyexplained.com/what-is-a-black-hole-made-of-source-of-spaces-mystery/): Did you know the smallest black holes are as tiny as an atom but have the mass of a huge mountain? Black holes are quite extreme, and these little details make them more stunning. Scientists have been trying to figure out what makes them tick for years and what is a black hole made of. The biggest problem with black holes is that they are not observable at the same level we can observe other objects in space. Check this out, too: What is a Star System? The Universe’s Systems Another thing is that black holes aren’t holes at all. They […]
- [What is a Star System? The Universe's Systems](https://astronomyexplained.com/what-is-a-star-system-the-universes-systems/): Do you know that in addition to the galaxies or huge star clusters holding millions or billions of stars and planets, there are smaller systems? We call them star systems, and star systems hold only a limited number of stars orbiting each other. When you look up from the Earth, each star might be part of a star system. What is a star system, and how does it differ from galaxies or star clusters? Check this out, too: How are Stars Classified? Star Classification Guide A star system is a small group of stars held together by gravity. These systems are […]
- [How Are Stars Classified? Star Classification Guide](https://astronomyexplained.com/how-are-stars-classified-star-classification-guide/): Do you know that the Milky Way galaxy has over hundreds of billion of stars? When you have this much of something, you need to classify and sort them to understand them and keep track of them better. How are stars classified, though? What is the classification based on? Astronomers have found clever ways to sort these stars. Check this out, too: Which Planet is Most Like Earth? Another Earth. There are several star classification systems so when we wonder how are stars classified, there is more than one answer. However, the Harvard Classification System is key to sorting stars. It […]
- [Which Planet Is Most Like Earth? Another Earth.](https://astronomyexplained.com/which-planet-is-most-like-earth-another-earth/): Did you know that for every five Sun-like stars in our Milky Way galaxy, there might be one Earth-like planet? Recent studies have changed how we see potentially habitable worlds – which we call the habitable exoplanets. With over 5,000 confirmed exoplanets and many more being checked, finding another Earth could be closer than we think. Which planet is most like Earth, though? Do we have a contender? NASA’s Transiting Exoplanet Survey Satellite (TESS) recently made a big find about this. They discovered an Earth-size world named TOI 700 e in its star’s habitable zone. This planet, 100 light-years away, is […]
- [How to Read the Stars: Beginner's Guide](https://astronomyexplained.com/how-to-read-the-stars-beginners-guide/): Did you know there are precisely 88 constellations in our night sky? Constellations that have shaped our stories, behaviors, legacies, and many other things. As humans, we put a lot of faith in stars, which has shaped us since the very beginning of time. It initially started to understand the vast night sky, but then it evolved into something different. Many people learn how to read the stars, but everyone uses it not for various things. No matter why you want to read the stars, the technique is the same. If I dive deep into why people learn how to read […]
- [First Stars in the Universe: The Start of Everything](https://astronomyexplained.com/first-stars-in-the-universe-the-start-of-everything/): There are trillions of stars in the universe, shining for billions of years. Ever wondered about the first stars in the universe? How did it all start? This question takes us back to the universe’s start. It’s where the first stars came from, in the dark beginning. They were the first things to exist after the dark period of the Big Bang. We believe that the first star in the universe is Methuselah – which is believed to have formed over 14 billion years ago. This is funny because we believe the universe is 13.8 billion years old. Check this out, […]
- [What's the Largest Star in the Universe?](https://astronomyexplained.com/whats-the-largest-star-in-the-universe/): As a kid, I used to look at the stars at night and wonder about those little dots, the Moon, the Sun, and everything I saw. Our Sun seemed huge to me, but it’s pretty average in the universe. The biggest stars are much, much bigger than our Sun. What’s the largest star in the universe – what is the biggest star, though? Do we know or have we discovered such a star? We must have – and we did. A lot of them, actually. Check this out, too: Most Habitable Exoplanet: Earth’s Twins Picture a star so big it could […]
- [Is The Moon a Star? What is Our Moon Really?](https://astronomyexplained.com/is-the-moon-a-star-our-satellite/): Look up at the night sky and the Moon can look a lot like a giant star. It shines brightly, it sits among thousands of other stars, and we can see it almost every night. Have you ever wondered if the moon is a star or something else? It looks so similar to thousands of other stars we see in the sky every night. Pretty easy to confuse them, they shine brightly and look like little dots. But the moon is not a star, it’s Earth’s natural satellite. It does not make its own light like the Sun and other stars. […]
- [Most Habitable Exoplanet: Earth's Twins](https://astronomyexplained.com/most-habitable-exoplanet-earths-twins/): What if we’re not alone in the universe? When you look at the dark sky every night, you’re not just seeing those little dots which are stars. Some of them are planets, and the scientists at NASA-like organizations are searching for planets like Earth. After all, Earth surely can’t be the only one with habitable conditions among billions, if not trillions, of planets. But what is the most habitable exoplanet or rather, have we found the most habitable exoplanet yet? Is there such a planet? Check this out, too: What type of star is our Sun? Since the 1990s, scientists have […]
- [What Is the Oldest Planet? Do We Have an Answer?](https://astronomyexplained.com/what-is-the-oldest-planet-do-we-have-an-answer/): Ever thought about the oldest planet in the universe? The universe is 13.8 billion years old, so there should be planets that echo this ego. There is one planet from those early days, and it is especially interesting because of its age and unique traits. NASA’s Hubble Space Telescope found Methuselah (PSR B1620-26 b) in the Milky Way galaxy. It’s thought to be around 13 billion years old, much older than Earth. This planet circles a pair of dead stars in the M4 cluster near the Scorpius constellation. This finding shows how planets formed quickly, just a billion years post-Big Bang. […]
- [What Type of Star is the Sun? Our Life Source](https://astronomyexplained.com/what-type-of-star-is-the-sun-our-life-source/): Ever wondered about our Sun’s true nature? It’s the heart of our solar system, but how does it compare to other stars? For what we know right now, it is the only Sun in the entire universe that hosts a planet with a life on it in its orbit. This is pretty magnificent achivement in my opinion, don’t you think? That’s why it’s normal to wonder whether our Sun is a very different star, or is it just one of billions of stars out there? What type of star is the Sun – can there be same type of stars out […]
- [How Many Exoplanets are There?](https://astronomyexplained.com/how-many-exoplanets-are-there/): Whenever I look at the night sky, I am always amazed by those basically unlimited little dots and what else is in that vast universe. One thing that we don’t see as much as the stars are the other planets, especially the planet types we call exoplanets. Check out also: Is the Universe Infinite? Exploring Cosmic Limits With over 5,600 confirmed exoplanets and more than 10,000 candidates waiting, the number is staggering. Each exoplanet could be a world unlike our own yet connected to us in the universe. NASA thinks the Milky Way has at least 100 billion planets, and some […]
- [Is the Universe Infinite? Exploring Cosmic Limits](https://astronomyexplained.com/is-the-universe-infinite-exploring-cosmic-limits/): Have you ever thought about how big the universe is? Is there a limit to where we are, or does it go endlessly, like is the universe infinite? Well, there is literally no clear answer to this for now. We are researching, though. As we look deeper into space with new technology, we find some answers but more questions. Scientists can’t agree on this big question. They use cosmology, theoretical physics, and space exploration to try to find answers. See also: What Types of Stars End Their Lives With Supernovae The universe we can see stretches out 46 billion light years […]
- [What Types of Stars End Their Lives With Supernovae?](https://astronomyexplained.com/what-types-of-stars-end-their-lives-with-supernovae/): Imagine being under the stars and seeing one bright star suddenly become brighter. This is a supernova, a rare event that still happens every 10 seconds in the universe. Astronomers have long been fascinated by these exploding stars, wondering which types of stars explode in such grand fashion. The answer is both easy and complicated. Do we know what types of stars end their lives with supernovae? Exploring supernovae starts with understanding stars and their explosions. Originally, scientists looked at the hydrogen in the star’s light to name two main types of supernovae: Type I (without hydrogen) and Type II (with […]
- [What is The Biggest Star in Milky Way Galaxy?](https://astronomyexplained.com/what-is-the-biggest-star-in-milky-way-galaxy/): Did you know UY Scuti is so huge it could hold over 5 billion suns? It’s seen as the biggest star in our Milky Way. This supergiant shows us just how vast stars can be. When discussing heavenly bodies, UY Scuti represents the extreme size of the cosmos. It shows us how small we are in comparison. But UY Scuti is changing. It’s a red supergiant star that may explode soon. When it does, a neutron star or black hole may remain. UY Scuti’s size is not only interesting but also tells us about the life and end of large stars. […]
- [Types of Stars: What are the Different Types of Stars?](https://astronomyexplained.com/types-of-stars-what-are-the-different-types-of-stars/): Every night, you look up at the sky, and there are millions of little dots; some are bigger, and some are smaller. Do you ever think about them, what they look like, and if they are the same? You might wonder about the types of stars and what are the different types of stars. There are many types, like red dwarfs to hypergiants. Each star type is unique, with its size, brightness, and life cycle. In astronomy, stars are sorted into seven main groups: O, B, A, F, G, K, and M. This system helps us learn about them. The hottest […]
- [How Many Constellations Are There? | Explore 88 Constellations](https://astronomyexplained.com/how-many-constellations-are-there-explore-88-constellations/): I’ve talked a lot about constellations lately, explaining what they are and how they form. But do you know how many constellations are there? It’s both a simple and a complex answer. Early people used stars to find their way and keep track of time. Now, these star groupings tell stories and share cultural history. Our interest in star patterns goes back ages. It shows our natural desire to find patterns and meaning in the heavens. Some constellations can only be seen in the north of the Earth, while others are seen from the south. Each one connects cultures through stories […]
- [How Are Constellations Formed? Unlock the Stars' Meanings](https://astronomyexplained.com/how-are-constellations-formed-unlock-the-stars-meanings/): If you are a frequent camper or live somewhere outside of a city, you will see millions of stars in the sky every night. Some of those stars, when looked closely, will form shapes, which we call constellations. Have you ever wondered how are constellations formed? How do constellations come to be, and what forces create them? Constellations tell a story that goes beyond just stars lining up. It’s a story woven into our universe’s very fabric. As we understand how celestial patterns are made, we see the dance of gravity in the night sky. Stars begin in fire, and gravity […]
- [What Constellations are Above Me? Discover Those Above You Now](https://astronomyexplained.com/what-constellations-are-above-me-discover-those-above-you-now/): When the night sky turns dark, beautiful star patterns that we call constellations appears. There are so many of them that appear at different times and places, it makes you wonder, “What constellations are above me right now?” These star groups have shown the way for people over hundreds of years. They are like a sparkling puzzle in the sky for everyone to enjoy. Looking at the stars, we learn their stories that have charmed us for so long. No matter where you are, in a busy city or a quiet countryside, you might ask which constellations are up there. It’s […]
- [Constellation Definition: Take a Journey in the Stars](https://astronomyexplained.com/constellation-definition-take-a-journey-in-the-stars/): When we look at the night sky, we see stars forming patterns. These patterns have been the basis for humans to find their ways, prepare for the future, seasons changes, and understand the world better. They have helped people for centuries. They tell stories and have helped in navigation and understanding the cosmos. The question is, what exactly is a constellation definition that has lasted over time? How does this age-old practice stay meaningful today? See also: What are Constellations? Understand and Unlock the Stars Constellations are not shapes we’ve find with our minds. They are there and they are real […]
- [What Are Constellations? Understand and Unlock the Stars!](https://astronomyexplained.com/what-are-constellations-understand-and-unlock-the-stars/): Before GPS and modern tech, ancient explorers used the night sky to find their way. Stars, especially constellations, have led the way for us, but what are constellations? How did these sparkling guides shape human history, and how did they become so important? Constellations are not just patterns in the sky. Their stories are told over generations, and these sky patterns have been studied and admired. They guide travellers and form a starry language shared across cultures. That’s why wherever you go, you will find the same stars, constellations, and usage methods. Astronomy constellations are like a map made of stars. […]
- [Is Multiverse Theory Proven? The Facts Explained](https://astronomyexplained.com/is-multiverse-theory-proven-the-facts-explained/): Imagine looking up at the night sky and think about the chance that what you see is just a small part of something bigger. The multiverse theory suggests this and much more. It stretches how we see space and time. Is the multiverse theory a proven fact or just a guess? Astronomers, physicists, and philosophers are all trying to find out. They are looking for signs that could prove this amazing idea. See Also: What is a Bubble Universe? Bubble Universe Theory The idea of many universes has become more popular and has some scientific backing. But solid proof is still […]
- [What is a Bubble Universe? Bubble Universe Theory](https://astronomyexplained.com/what-is-a-bubble-universe-bubble-universe-theory/): In science, theories are generally the foundations of what we know today. We first theorize something and try to prove that theory – if we don’t find something by accident. Every theory needs to be proven to know that they are actually true. Bubble universe theory is one of the many theories out there. The bubble universe theory is so vast that it challenges our whole view of reality. It suggests our universe might be just one among countless cosmic bubbles. Each one floats in an endless space. What does this mean for how we see space and time? In string […]
- [How Big Is the Universe? Exploring Space](https://astronomyexplained.com/how-big-is-the-universe-exploring-space/): Did you know the universe we can see is about 92 billion light-years wide? It’s a vast space that boggles the mind. As we explore space, we find more about the massive universe waiting for us. But are you sure about the universe’s size and how big is the universe? Can we determine this? These are really tough questions. As Sabine Hossenfelder says, things we can’t fully prove are only as good as beliefs. There is nothing wrong in believing in them, but we can’t also say that it’s scientifically valid. We know what we can see now. In this article, […]
- [Does String Theory Support the Multiverse?](https://astronomyexplained.com/does-string-theory-support-the-multiverse/): The love of science-fiction writers and a deep argument point for physics lovers, the multiverse theory. Some people defend the multiverse theory as if it is completely real and all our knowledge supports it. That’s completely wrong, but it is still a probability because our knowledge doesn’t reject the idea altogether. There are many theories within physics, like the String Theory, which is one of the most fundamental theories. Let’s see what the string theory thinks of the multiverse. Can string theory support multiverse? Or is it just a thought experiment that the scientists are trying to figure out? Anything is […]
- [Multiverse Theory Paradox: Is it real?](https://astronomyexplained.com/multiverse-theory-paradox-is-it-real/): The love of science fiction movies, shows, and books, perhaps one of the most popular cosmological thing in our world today, is the multiverse. The reason why the multiverse theory stuck in everyone’s mind is probably because of different intriguing concepts. There are many things about multiverse theory, especially the multiverse theory paradox that comes with the idea. When you mention multiverse, the multiverse theory paradox also comes with it because it opens up many doors. I think the most popular multiverse theory paradox is the Schrödinger’s Cat (you know, where the cat is both dead and alive until you open […]
- [What is Kepler's Third Law? Understand How Planets Move!](https://astronomyexplained.com/what-is-keplers-third-law-understand-how-planets-move/): We have been looking at the stars for too long and have come up with dozens of ideas, laws, and things that we thought governed the universe. Most ideas from the past have become obsolete with new discoveries. However, Johannes Kepler’s three laws for planetary motion have stood the test of time. He created three planetary laws, and today, we will look into Kepler’s third law, the last one. I have examined the second and compared it to the other two laws in my previous articles. So, today, it is time to look into the last one, Kepler’s Third Law. Johannes […]
- [Kepler's Second Law of Planetary Motion: Comparison](https://astronomyexplained.com/keplers-second-law-of-planetary-motion-comparison/): How the celestial bodies move out in space depends on certain fundamental laws. We call these laws Kepler’s Laws of Planetary Motion, and there are exactly three of them. Each has its own significance in the governance of the movement of celestial bodies. However, Kepler’s Second Law of Planetary Motion is probably the most important. Each of these laws is connected to each other, and they differ in how they measure certain things. If you are interested in Kepler and his amazing works, you must understand all and can compare all three to each other. In this article, I am going […]
- [What is Kepler's Second Law?](https://astronomyexplained.com/what-is-keplers-second-law/): Humans have been watching space since the beginning of modern history, wondering what is up there. In recorded history, we see a lot of astronomers from the beginning of time. The most significant ones have brought us a better understanding of the space. One of them is Johannes Kepler, founder of Kepler’s second law. The simple yet powerful principle of Kepler’s Second Law, known as the “law of equal areas,” explains how planets move in their orbits around the Sun. If you’ve ever wondered why a planet speeds up when it’s closer to the Sun and slows down when it’s farther […]
- [5 Best Astronomy Books for Beginners: Start Your Astronomy Journey](https://astronomyexplained.com/5-best-astronomy-books-for-beginners-start-your-astronomy-journey/): Astronomy is a big field with numerous publications, articles, and, more importantly, books. One thing that’s good about all these publications is that astronomy and cosmology are some of the things that authors have tried to show and teach everyone. At some point, all of us were also interested in astronomy. If you are interested and want to get started, what are the best astronomy books for beginners? There are too many options to include in one article. But personally, I read a few of them when I was starting my journey to astronomy. There are certain things to look for […]
- [How is the Doppler Effect Used in Astronomy?](https://astronomyexplained.com/how-is-the-doppler-effect-used-in-astronomy/): If you ever studied the Doppler Effect as part of the study of sound waves or in another part, you probably saw where we use the Doppler effect. For example, we see the most benefit here on Earth as an ambulance approaches or drives away. It’s everywhere in our day-to-day lives. When it comes to understanding how the Doppler effect is used in astronomy, things may get complicated. It might get complicated because there is no sound in the universe. But it is not just sound that the Doppler Effect works with. It explains a whole lot of other stuff, especially […]
- [Definition of the Doppler Effect](https://astronomyexplained.com/definition-of-the-doppler-effect/): Have you ever wondered why the sound of a passing ambulance changes as it approaches and then moves away from you? Or why do the stars appear to have different colors depending on their motion relative to us? The answer lies in the definition of the Doppler Effect and how it works. The Doppler Effect is one of the concepts in our world and universe that explains how certain things work and why they happen. In the case of the Doppler Effect, it influences the perception of sound and light. In this article, We will explain the definition of the Doppler […]
- [Binary Cross Entropy vs Categorical Cross Entropy](https://astronomyexplained.com/binary-cross-entropy-vs-categorical-cross-entropy/): In machine learning, entropy is one of the most important things and understanding the different loss functions within entropy is crucial. It can help you achieve optimal performance in various tasks. Within the loss functions of entropy, there are binary bross entropy and categorical cross entropy. These are two common loss functions that people who deal with machine learning encounter with and they look quite similar from the outside. However, when you compare binary cross entropy vs categorical cross entropy, you see that they are not the same. Both measure the dissimilarity between predicted and actual class labels. But they have […]
- [A Comprehensive Guide to High Entropy vs Low Entropy](https://astronomyexplained.com/a-comprehensive-guide-to-high-entropy-vs-low-entropy/): Entropy is the core of order and disorder. It’s what dictates what’s happening in every single second of our lives. And entropy never decreases, it always increases. More chaos. But what changes between high entropy vs low entropy? A lot, depending on the concept. Entropy alone plays a significant role in various fields, including physics, information theory, and chemistry. It is a measure of the disorder or randomness in a system, and understanding the difference between high entropy vs low entropy is crucial in comprehending the behavior and characteristics of different systems. Check this article out, too: Definition of the Doppler […]
- [Entropy vs Enthalpy. What is the Difference? A Comparative Study](https://astronomyexplained.com/entropy-vs-enthalpy-what-is-the-difference-a-comparative-study/): Thermodynamics is a scientific branch that deals with the study of energy and its transformations. This branch of physics provides a framework for understanding and analyzing the behavior of systems. It ranges from microscopic particles to large-scale processes. Two key concepts in thermodynamics are entropy and enthalpy. They play crucial roles in understanding the behavior of energy in different systems. What is the difference between entropy vs enthalpy, are they different? See also: Binary Cross Entropy vs Categorical Cross Entropy Now, we will look at entropy and enthalpy, explore their definitions, measurements, application, and the differences between entropy vs enthalpy. We […]
- [What is the Opposite of Entropy? Negentropy Concept](https://astronomyexplained.com/what-is-the-opposite-of-entropy-negentropy-concept/): If you’re interested in astrophysics or anything related to chaos and disorder on systems, you probably have heard about entropy. Entropy is why our universe has disorder and randomness. The increase or decrease of entropy can make a big difference on our universe, lives, and even the most simple things such as a shattered glass, but what is the opposite of entropy? Does it exist, and if it does, what does it do, and what does it bring? In the world of physics and thermodynamics, entropy is a term that we use for describing the measure of disorder or randomness in […]
- [Multiple Universes in String Theory: Are there more of us?](https://astronomyexplained.com/multiple-universes-in-string-theory-are-there-more-of-us/): In the vast and complex field of theoretical physics, string theory and multiverse theory go head by head. The idea of multiple universes in string theory is for now look like a stuff of science fiction but there is a legitimate area of study. String theory aims to explain the fundamental nature of the universe by understanding matter as tiny vibrating strings. The multiple universes concept, or the multiverse theory, emerges as a fascinating possibility within this framework. This blog post will talk about the multiverse theory, exploring the different types of multiverses, the ways in which string theory supports the […]
- [What is Entropy in Physics? Disorder in the Universe](https://astronomyexplained.com/what-is-entropy-in-physics-disorder-in-the-universe/): Entropy is a fundamental concept in physics. This theory has a crucial role in understanding the behavior of systems at various scales. This includes microscopic particles and the entire universe. It is often difficult to understand, but the importance of entropy cannot be overstated. In this blog post, we will explore entropy and its applications in different branches of physics. These include thermodynamics, statistical mechanics, and quantum mechanics. If you are interested in physics or want to learn more about how the universe works, this explanation of entropy will introduce you to the basic principles that control our physical reality. Introduction […]
- [What is the Big Bang Theory? How did our universe begin?](https://astronomyexplained.com/what-is-the-big-bang-theory-how-did-our-universe-begin/): The Big Bang Theory is the scientific definition of the origin of the universe – the theory that tells us how the entire universe began. This theory says that our universe began as a singularity. A point of extremely high temperature and infinite density and it exploded to create the universe we are in now. Since that moment, it has been expanding ever since. With it, it slowly created everything the universe has now – matter (dark, anti, normal), galaxies, stars, and others. But what exactly is the Big Bang Theory and its key components? How did we determine how the […]
- [What is Cosmology? An Introduction to the Study of the Universe](https://astronomyexplained.com/what-is-cosmology-an-introduction-to-the-study-of-the-universe/): The universe is a vast and mysterious place, filled with countless galaxies, stars, and planets. For centuries, humans have been fascinated by the study of the cosmos, seeking to unravel its secrets and understand our place within it. This field of study is known as cosmology. Cosmology stands as one of the most important fields of study to understand more about us, whether we are alone, and the structure of the universe from a holistic view. That’s why if you are interested in astronomy, you should also know what cosmology is and how it came to be. In this article, we’ll […]
- [Where is Earth in the Milky Way Galaxy?](https://astronomyexplained.com/where-is-earth-in-the-milky-way-galaxy/): Have you ever wondered where our home planet Earth is within the Milky Way galaxy? In ancient times, we used to think Eart was at the center of our universe. In reality, Earth is just a tiny particle within a much larger cosmic configuration. Understanding Earth’s position in the Milky Way can give us a greater appreciation for our place in the universe. It can also help us shape our understanding of the cosmos. Years, decades of research showed us again and again how small Earth actually is and how small of a place it takes in the universe. It’s smaller […]
- [Cosmic Microwave Background Radiation Definition and History](https://astronomyexplained.com/cosmic-microwave-background-radiation-definition-and-history/): Cosmic Microwave Background (CMB) radiation and its definition holds a significant place in cosmology. Its discovery and following study have provided massively useful insights into the origins and evolution of our universe. In this blog post, we will talk about the definition of CMB radiation, explore its discovery, and discuss its importance in understanding the This post aims to give a comprehensive understanding of cosmic microwave background radiation. By defining its properties, exploring its discovery, and highlighting its importance in cosmology, we hope to shed light on this remarkable phenomenon and showcase its significance in unraveling the mysteries of our universe. […]
- [How Big are Black Holes?](https://astronomyexplained.com/how-big-are-black-holes/): If there is one thing that affects the whole of our understanding of information and universe, I think black hole will take that place, right next to dark matter and cosmic microwave background radiation. These holes are not just random things that happen in our universe, they are one of the things that annhiliates information according to the quantom theories we have. Of course, this is just a theory as we can’t go into one of these holes to find proof of it. But it is a fact that black holes take a lot of stuff inside of them with their […]
- [Cosmology vs Astronomy. Explore the Differences and Similarities](https://astronomyexplained.com/cosmology-vs-astronomy-explore-the-differences-and-similarities/): Studying the universe, the place where our planet resides and where all life exists is one of our history’s most important and ancient studies. From ancient civilizations observing the movements of celestial bodies to modern-day scientists unraveling the mysteries of the cosmos, the fields of astronomy and cosmology have played pivotal roles in our quest for knowledge. However, is cosmology vs astronomy are the two same things or do they differ? How do we understand the difference? Check this article out, too: What is a Nebula? Stuff Our Eyes Can’t see What is exactly the differences and similarities between cosmology vs […]
- [Do Black Holes Die? Explore A Black Hole's Journey](https://astronomyexplained.com/do-black-holes-die-explore-a-black-holes-journey/): You probably started to hear about black holes when you were just a kid, perhaps in the physics class. These things are extremely popular even among people who are not interested in astronomy. Black holes are exciting things but they are also quite scary. They everywhere, even in the middle of our galaxy and they tend to eat everything that comes close to it, specifically right after its event horizon, thanks to its immense gravitational pull. So, they eat everything that comes close to it but is there a way to get rid of them, do black holes die? This topic […]
- [How Many Planets Are in the Milky Way?](https://astronomyexplained.com/how-many-planets-are-in-the-milky-way/): The Milky Way is a vast and mysterious galaxy that has captivated astronomers and space enthusiasts for centuries. With its countless stars, nebulae, and other celestial bodies, it is a constant source of fascination and wonder. One question that often arises when exploring the Milky Way is: How many planets are in the Milky Way? Understanding the number of planets in the Milky Way is not only an intriguing scientific endeavor but also crucial for our understanding of the universe and our place within it. In this blog post, we’ll look at the fascinating world of planetary formation, the estimation methods […]
- [What is Antimatter Used For? Life Changing Use Cases](https://astronomyexplained.com/what-is-antimatter-used-for-life-changing-use-cases/): We hear that there are matters all around the universe, and they are the building blocks of the universe. There is normal matter, dark matter, and then antimatter. We talked about various matters before, but not antimatter. What is antimatter, and what is antimatter used for? Good questions. Antimatter is a concept that sounds straight out of science fiction. We are still trying to understand what it is. In this blog post, we will talk about the world of antimatter and explore its various use cases in our day-to-day lives, from science to physics. What is Antimatter? First things first. Before […]
- [What is Dark Matter? Universe's Mystery](https://astronomyexplained.com/what-is-dark-matter-expert-guide-on-dark-matter/): Our universe is compromised of several matters and these matters, collectively, create our universe and shape how it works. Antimatter, dark matter, and normal matter, are the three building blocks of matter that exist in our universe. At least, the ones that we are aware and can understand right now. Among these, dark matter is the second most frequent matter in our universe. 26.8% of our universe is made up of dark matter. It exists so much but what is dark matter? Check this out, too: Dark Matter and Black Holes: What’s the Connection? Unfortunately, really understanding dark matter is one […]
- [What is the Kepler Mission? Understanding the Kepler Mission](https://astronomyexplained.com/what-is-the-kepler-mission-understanding-the-kepler-mission/): The exploration of outer space has always been important in humans’ lifetime. From the first moon landing to the discovery of distant galaxies, each new milestone in space exploration pushes the boundaries of our knowledge. We have been looking at the stars from the day we have evolved into Homo Sapiens, maybe even when we were Neanderthals. In the written history, we have histories of people looking at stars and wondering. So, we always had missions or ideas to strengthen our understanding of the universe. Perhaps one of the most influential mission that has revolutionized our understanding of the universe is […]
- [How Many Black Holes are There? The Nature of Black Holes](https://astronomyexplained.com/how-many-black-holes-are-there-the-nature-of-black-holes/): Black holes are an essential thing in our universes, long-lasting bodies of dying stars, at least those which were capable in size of turning to a black hole. These holes are mostly black boxes to us, how they work, what’s inside of them, and what happens to the information that goes inside. These entities, have an immense gravitational pull that can bend light and distort space-time. It’s clear that they are extremely powerful in many senses but how many black holes are there in the vast universe? Do they pose a threat to us if there is like a bunch of […]
- [What is a Supermassive Black Hole? Solve the Mystery](https://astronomyexplained.com/what-is-a-supermassive-black-hole-solve-the-mystery/): If you know a little about black holes or read a few of my articles like how many black holes are there, then you know there are different types of black holes. One of them are supermassive black holes. What is a supermassive black hole? Well, they are one of the biggest type of black holes to ever exist and form. Supermassive black holes are at the centers of galaxies, including our own Milky Way. These supermassive black holes are millions, if not billions, of times more massive than our sun. Similar to normal black holes, their gravitational pull is also […]
- [How is a Black Hole Formed? Black Holes Explained](https://astronomyexplained.com/how-is-a-black-hole-formed-black-holes-explained/): In the vast expanse of the universe, there are wonders that captivate and baffle scientists and astronomers. Among these, black holes stand out as some of the most intriguing and mysterious. These cosmic unknown giants have an immense gravitational pull and people wonder how is a black hole formed since they are such big and powerful entities. That strong gravitational pull is so strong that nothing can escape from its pull, not even light. Check this article out, too: How Far is the Closest Black Hole to Earth? Since there is not even light around these giant cosmic mysteries, we call […]
- [What is Antimatter? How Important Is it?](https://astronomyexplained.com/what-is-antimatter-how-important-is-it/): Ever been curious about the mysteries of the universe and the strange things it has? There are a lot of things happening in the universe but there are only a number of things that make up the universe. One of the pillars of the universe is antimatter. It’s like the total opposite of regular matter, and scientists are pretty fascinated by it because its’s actually quite interesting and hard to understand. When it comes to understanding the mysteries of the universe, mysteries like antimatter never stops. It plays an extremely important role in the understanding of the universe. But the thing is, […]
- [Dark Matter vs. Antimatter. What is the Difference?](https://astronomyexplained.com/dark-matter-vs-antimatter-what-is-the-difference/): What is the real difference between dark matter and antimatter? Both are mysteries of modern physics, and each plays a unique role in shaping the universe. Dark matter is the hidden mass that we believe to keep galaxies from flying apart, antimatter is an “opposite” version of normal matter that, when it meets matter, vanishes in an instant burst of energy. They sound similar but dark matter and antimatter are different in their behaviors and impacts. Dark matter, which interacts only through gravity, is essential to the structure of galaxies, while antimatter brings insight into the forces and particles from the […]

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- [Contact](https://astronomyexplained.com/contact/): If you would like to suggest and/or report something, you can reach out to me at contact@astronomyexplained.com. This is my own blog’s email where I check the most frequent.
- [About](https://astronomyexplained.com/about/): This blog is created to be a friendly face to astronomy and cosmology enthusiast by another fellow astronomy and cosmology enthusiast. By no means, I am a professional, this is only a hobby of mine where I ended up spending a ton of time learning about it. Now, I am sharing these information for people like me.

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