Tag Archives: the universe

What If We Detonated an Antimatter Bomb on Earth?



It’s time to live your ultimate supervillain fantasy. Today, you’re going to unleash your masterpiece of mass destruction. An antimatter bomb. What is antimatter? How would you build it? What is particle physics used for? How strong is an antimatter bomb? How much damage would it do to the planet? What will happen to the Universe? And how much damage would it do to your bank account?

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Multiverse Theory: Are We A Part Of Infinite Parallel Realities?



Is our Universe just one of many in an infinite, ever-expanding multiverse? What exactly is the multiverse? Is it just a speculation of us humans or could it be that our universe is a part of a multiverse? In this article we will discuss these questions.
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We have used the theory of multiple universes in cosmology, physics, philosophy, astronomy, religion, science fiction, comic books and fantasy. But we will look at the scientific aspect of it. We will only focus on the evidences and facts and observations made by astronomers and then draw a conclusion on the topic. 
The three dimensional world which we witness in our daily lives may just be an illusion where there is no distinction between past, present and future. But how is it possible? How can we be so wrong about something so familiar? These questions bother almost all astronomers and physicist. It’s a groundbreaking possibility that opens up a whole different world for us. We will discuss an important Question. What if alternative Universes are being formed all the time? The Big Bang might not be a unique event. We might live In a duplicate parallel reality among the many other parallel realities.  Somewhere there’s a duplicate of you, me and everyone else. Are we in a Universe or a Multiverse? 
Uniqueness is an idea so usual that no one questions it. A recent picture of the cosmos is coming to light, where nothing is unique. This recent picture challenges the notion of Uniqueness, in which duplicates of things are unavoidable. There might be duplicates, not only of objects but of me, you and everyone else.  And if it’s right, where are they? Why haven’t we seen them? There was a time when the word Universe meant everything that existed, the notion of more than one universe seemed impossible. But if we go beyond our Milky Way and even beyond the distant galaxies and beyond the end of the observable Universe, we might find that our Universe is not alone. There might be other Universes, in-fact, there might be new universes being born all the time might have stars and even a planet that looks familiar. We may be live in an expanding sea of Multiverse! Some of these might not have the basic requirements for the formation of matter. Others might have planets, stars and Galaxies that look familiar to us but with a slight difference. And if there are many other Universes out there, some might be even identical to ours except for the slightest Details. For Example, in any other parallel reality, it might be possible I am the Prime Minister of India. And if the multiverse exists, we will have to encounter a lot of possibilities that might exist. There could be other places where duplicates of me would exist and would think, act and speak in the same way as I do, but with some slight differences. 
Is it science, is it religion, is it Philosophy? As a Physicist we should not and we don’t ask these questions. We follow the logic, and the logic leads there. There was a time when people thought Earth was at the centre of the Cosmos and everything else that exists revolved around us. Then scientists like Galileo and Copernicus showed us it’s the sun that’s at the centre of our solar system. And our solar system is just a little neighbourhood in our Gigantic Galaxy. And our galaxy, it’s among the billions of galaxies that make up our universe. These ideas sounded shocking and outrageous when they were first suggested, but now we don’t even think to question these ideas. The idea of different alternate universes or the multiverse might be the same.  It just requires a radical change in our perspective of the cosmos. 
So let’s talk about where did the idea of Multiverse came from? What are the evidences of its existence? Well, a lot of astonishing discoveries and theories have suggested we may be a part of the multiverse. The very first among them is the Big Bang, the theory of the origin of our universe. According to this theory, our Universe began 13.8 billion years ago in a very hot and dense, violen* explosio* of a very tiny primordial nugget. Over millions and millions of years the universe cooled down and it lead to the formation of Stars, galaxies and planets. The universe is still expanding because of that explosio*. But there’s one major piece of this theory that’s missing. The Big Bang tells nothing about what caused the explosio*, throwing everything outwards. What caused the BANG? So, what furled the violen* explosio*? What force could set everything moving outwards? 
In 1979, a young physicist Alan Guth laid the foundation of the idea of the multiverse.

Written By Prayag Pandey

#InsaneCuriosity #MultiverseTheory

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What If We Could See Through a Black Hole?

What If We Could See Through a Black Hole?

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This star is about to transform into a black hole. And we’re about to travel inside it to see what’s on the other side. The only problem is that we’ll never be able to report our findings back to Earth. Because once you go inside a black hole, there’s no coming back. So maybe there’s a better way to find out what’s on the other side. Could we use a special telescope? How would light behave inside a black hole? And why could the first image of a black hole provide all the answers?

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What is the Great Attractor?

What is the Great Attractor?

Is there anything in the universe that’s just so eccentric, so breathtaking, and so beyond our understanding, that it gets a badass name? That’s what we’ll find out together in today’s episode! What is the Great Attractor?
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Okay, let’s do a bit of thought experiment to kick off the show.

I bet everybody here has been to the mall, right? Have you ever experienced a time when you are walking, and suddenly, you saw a bunch of people moving towards something?

Now, you don’t know what it is. You don’t know if it’s some food stall that’s really hitting the sales, or a new product being sold. You just know that it’s pulling people towards it. And to top it all off, you, with your ever curious mind, gets drawn to it as well! So, before you know it, you start walking.

It’s crazy, right? You don’t know why people are gathering, and yet you are attracted to that place where you’re absolutely clueless about what’s there to see, or even if what’s there could harm you. You just know that you’re curious and you want to find out. Something that you don’t understand is too charismatic for you to resist.

That, my dear friends, is the characteristic of our topic for today. A weird thing in space that is so bizarre, so unimaginably weird, and so difficult to grasp, that all we can do is to give it an appropriate name, The Great Attractor.

I hope we can say that The Great Attractor is a gigantic floating Harry Styles or Captain Ri from CLOY lightyears away in space from us, but that’s the problem. We don’t exactly know what it is. But we don’t actually know, so why not? It may actually be Henry Cavill in space.

Is he still popular now? I’m not keeping up with Hollywood stuff. Moving on.

Okay, here’s what we know about it so far. We don’t know what it is, but we know that it’s there. We’re sure it’s there, and we can see signs that it’s there.

It’s like having a gigantic stuffed toy in a very, very dark room. We can touch the fur, and we can feel how soft it is, maybe even smell it a bit, but that’s all the information we have. We’re not sure if it’s really a stuffed toy. It could be something else entirely.

So what are our observations leading us to think that it’s there? What are our touches to the fur and our sniffs to it?

We know that Hubble’s observations in 1929 lead us to believe that the universe is actually expanding, after he realized that a lot of galaxies are moving away from us. And not just moving away, it’s moving at an extremely fast pace faster than the speed of light.

This phenomenon is now something that we know as the Hubble flow: the movement of the galaxies due to the expansion of the universe.

To make that more visually appealing, say that you have a balloon that hasn’t been blown up yet. To add a little more playfulness, let’s say you decided to draw some random dots on it.

Now, you can measure the distance between the dots you made in the balloon, right? Okay, say at this point, you find a pump and you start blowing air into the balloon. Naturally, the balloon expands. But what else is happening here? The dots you drew earlier are now moving apart from one another. If earlier, one dot is a centimeter from another, now it’s maybe 5 centimeters.

The dot didn’t move, but it’s now farther away from the other because where it’s drawn at expanded.

The universe does this as well. It expands in a way similar to what we described in the balloon analogy. The galaxies are moving apart from one another at some velocity, so we expect them to be farther and farther from one another at a constant rate, right?

Oddly, this is not what scientists observe to be actually happening. Instead, they see a lot of galaxies seemingly gravitate towards a region in space. Even our very own Milky Way galaxy! The Great Attractor!

What scientists are sure of is that whatever it is, it’s definitely one powerful gravitational anomaly.

So how exactly did scientists arrive at this conclusion? That we are heading something so mysterious and puzzling?

Well, firstly, there’s this thing called expectation. The universe is expanding at an astoundingly fast rate of 2.2 million kilometers per hour!

So keeping this in mind, then, if we try to measure the speed at which a nearby galaxy is moving away from us, say, Andromeda, then we ought to get that speed right? Apparently not. This is one of the first odd measurements scientists found.

#InsaneCuriosity #TheGreatAttractor #HowTheUniverseWorks

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What Caused The Big Bang?

What Caused The Big Bang?

The Universe began not with a whimper but with a Bang! Everything in this Universe and the Universe itself came into existence because of the commonly told Big Bang.
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It all started when in 1922, a Russian Meteorologist, Alexander Friedmann proposed that the universe might be expanding. In a very rare blunder, Albert Einstein, when came to know about this, rejected his theory and with his erroneous calculations proved him wrong. Five years earlier, Einstein had published the Static model of the universe and was very convinced that it was correct. He claimed Friedmann’s theory to be violating the conservation of energy. After eight months, however, Einstein admitted his mistake and published a retraction. The Equation of General Relativity allows for the possibility of an Expanding Universe.
Today this Big Bang theory is an accepted idea of cosmology. The Expansion of the Universe was first observed by Vesto Slipher in the Early 1920s and in 1929, Edwin Hubble who had access to some world’s largest telescopes gave the Hubble Law. According to it, every distant galaxy is moving away from each other with a velocity proportional to its distance. The farther away a galaxy is, greater is the velocity with which it moves away. Then Arno Penzias and Robert Wilson detected a background of microwave radiation known as the Cosmic Microwave Background(CMB) radiations today, coming to Earth from all the directions. It was an afterglow of the primordial, hot and dense Fireball. Today, with the data collected from the Cosmic Background Explorer (COBE) satellite fits perfectly with the Big Bang and that it accounted for the light nuclear isotopes like deuterium, hydrogen, helium-3 and others. The Big Bang theory is a success but in its traditional form as it was proposed is incomplete. Though it’s called the Big Bang Theory, it does not tell us anything about the Bang! It’s the theory of what happened after the Big Bang, describing how the universe cooled and expanded, and how mater formed different Stars and Galaxies. The theory does not tell us anything about the underlying physics of this explosio*. It not even mentions what caused the Bang, what Bange*, why it Bange* and what happened before the Bang! The inflationary cosmos explains this and we will discuss the physics behind it in this video.
Could the Big Bang have been caused by the gigantic bag of TNT, or a thermonuclear explosio*? Or maybe a gigantic ball of matter collided with a gigantic ball of anti-matter. In fact, none of these events are responsible for the Big Bang and start of our Universe. The Big Bang had two very special and distinct features that differentiated it from any typical explanation.
First, On large scales Big Bang was far more homogenous than any ordinary explosio*. We must clarify you first while discussing homogeneity, that the Universe is inhomogeneous in many ways. New York differs from California and so are the Stars, galaxies and the clusters scattered through the space in a complex pattern. Cosmologically, these are all small scale. On a large scale, like if we divide the Universe into cubes of 300 million light years or more. We would find that each cube resembles the others in all its properties like mass density, light output, etc. The biggest evidence of it is the Cosmic Microwave Background(CMB)  Radiations and data from the COBE satellite. We would need a brief history about the Cosmic Microwave Background Radiation to explain the uniformity of our Universe. The Early Universe was boiling and dense and it would rip apart the electrons from the atoms which resulted in a plasma that filled the space. This  plasma was very opaque. So the protons making up the Cosmic Microwave Background radiations, were absorbed and re-emitted constantly. After about 300,000 years the universe cooled to form a transparent plasma of neutral atoms. Since then, the photons have travelled on a straight path and provide us an image of a universe that was 300,000 years old.
Normally such uniformity is easy to explain, because anything comes to a uniform temperature when left undisturbed for a long time. But in the Big Bang theory, the universe develops quickly, leaving no time for the universe to evolve and uniformity to be established. For the sake of discussion lets pretend that the universe contains blue creatures, each having a furnace and refrigerator and have the task to create a uniform temperature.
#InsaneCuriosity #TheBigBang

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9 Strangest Galaxies In The Universe!

9 Strangest Galaxies In The Universe!

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From galaxies that are shaped weirdly, to ones that have unique properties, join me as I show you the strangest galaxies in the universe!
9. ESO 137-001
I want you to think about the “shapes” of universes. Depending on the pictures you look at, you likely think of things like the spirals that many galaxies are believed to be shaped as. But in the case of ESO 137-001, that isn’t exactly the case. Because this galaxy…is shaped like a Jellyfish.
No, really, the spiral form of the galaxy is still there. BUT, it also has a “tail” that is formed by stars that are in its “wake” if you will, and it’s quite a tail as it extends over 260,000 light years into space!

8. NGC 1052-DF2
Ok, this one was weird in context as I’ll explain. You see, in 2018, the Hubble Space Telescope (one of the most important pieces of technology we have in terms of mapping space) found a galaxy known as NGC 1052-DF2. When scientists and astronomers looked at the galaxy though, they felt that something was missing. Mainly, there was a lack of Dark Matter, and that should’ve been impossible.
“Dark matter is conventionally believed to be an integral part of all galaxies — the glue that holds them together and the underlying scaffolding upon which they are built,” explains co-author Allison Merritt from Yale University and the Max Planck Institute for Astronomy, Germany.

7. MACS 2129-1
The place known as MACS 2129-1 is definitely a galaxy that stands out for a whole host of reasons. Not the least of which is because it’s what’s known as a “No life Galaxy”. To be clear, there is life in the form of stars and planets within it, that’s not the issue. But, the galaxy is no longer “active”, meaning that it’s not making anymore stars despite it being over 10 billion years old.

6. The Andromeda galaxy
Arguably the most famous galaxy in the universe outside the Milky Way, the Andromeda Galaxy is one that has led many people to wonder what is just outside our own galaxy, mainly because it’s our neighbor. Not just that, it’s our largest neighbor by a wide margin, and there’s a very good reason for that. Mainly, the Andromeda Galaxy is known as a “cannibal galaxy”.
What does that mean? Well, as the title describes, it actually collides with and devours other galaxies in order to make itself bigger:
“Andromeda has a much bigger and more complex stellar halo than the Milky Way, which indicates that it has cannibalized many more galaxies, possibly larger ones,” lead study author Dougal Mackey, an astronomer at Australian National University, said in a statement. “Knowing what kind of a monster our galaxy is up against is useful in finding out the Milky Way’s ultimate fate.”

So, remember the Jellyfish Galaxy we talked about a little while ago? Well, meet its cousin, the Tadpole Galaxy. This one is very on the nose in terms of its name because of the fact that it has a LONG tail that is attached to a body that reminds scientists of a tadpole. So looking at this you may wonder, “How did this happen?” According to the ones who found it, it’s a remnant of sorts from a galaxy that collided with another.
4. W2246-0526
If this list has shown you anything so far, it’s that the state of our universe is very much in a state of flux. But what you might not realize is that while some galaxies do collide with each other, others go and just steal things from one another. They alter shapes, steal stars, and sometimes even become brighter. Which is the case with W2246-0526:

3. Little Cub
Found in the Ursa Major Constellation, there is a dwarf galaxy known fondly as the “Little Cub”, and it’s one that has scientists very curious despite its impending doom. Why is that? Because the “Little Cub” as it is known is a galaxy that is dormant, and it has remained unchanged for about 13.7 billion years. If you know the alleged history of the universe, that would mean that it has been the same since the beginning of the universe more or less.

2. The Petal Galaxy
Let’s dig back into the visuals of galaxies for a bit. There are many galaxies out there in the universe that are growing at various rates as we’ve shown. But ESO 381-12 is different. Not only is this one growing, it’s growing in a way and in a shape that is truly baffling scientists. How so? Well, it looks like a flower in bloom, and the “petals” as they are known aren’t symmetrical.

1. Messier 83
15 million light years away in the Hydra is the galaxy known as Messier 83, and it is a galaxy that has caught a lot of people’s eyes. Mainly because those who have looked at it noticed that it has “two hearts”:

#InsaneCuriosity #StrangestGalaxies #HowTheUniverseWorks

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The Most Massive Objects In The Universe!

The Most Massive Objects In The Universe!

Did you know that our universe is so big that we cannot really approximate its actual size?
Now that you can imagine how our universe is extremely big, it’s easy to grasp that it’s filled with wonder-souly massive objects. Curious to know these objects in order? Keep watching!
The Most Massive Objects in the Universe.

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Prior to stating the list of the most massive objects in the universe, it’s crucial to understand the concept of mass along with the astronomical mass units. Mass by definition is the measure of the amount of matter in an object usually measured in grams (g) or kilograms (kg), however due to the difficulties in measuring and expressing astronomical data in the international system of units (SI units); the Astronomical System of Units was developed in 1979 in which there was a redefinition of units of mass, time and length and the astronomical constants as well.
The astronomical unit of mass is the solar mass aka the mass of the sun which is approximately equal to 1.98892 * 10^(30) kg and it’s the standard unit of describing the mass of stars and galaxies.

Passage 1
When it comes to cosmology, the term object is a loose concept because the universe is filled up with so many objects such as planets, stars, black holes and pulsars. However, one must ask “is any structure of gravitationally bound matter considered to be an object?” If the answer is yes, then we must consider nebulae, galaxies, galaxy clusters and the clusters of the galaxy clusters as objects as well. Moreover, we should consider the cosmic web, which is an overarching structure that holds all the matter in the universe as an object. Therefore, in this video we are introducing the most massive objects in the universe covering most of their types in descending order:

10- As you probably know, the most massive object in the universe from the beginning of time is the universe itself right before the moment of the big bang. The big bang model states that the universe at the beginning 13.7 billion years ago was in an extremely hot and dense state, just try to imagine the total mass of the universe condensed into extremely infinitesimally small point-like singularity.

9- Dark Energy; which constitutes 68% of the universe- you may wonder how on earth would energy be massive?! But thanks to Einstein’s energy-mass famous equation E=mc^(2) where c is the speed of light, transforming energy into mass is trivial. You may also have heard of the dark energy previously but let me explain its importance in detail… scientists in the early 1990s were fairly certain about some dynamics of the universe’s expansion; such that it might have enough energy density to stop its expansion and recollapse or it might have so little energy that it would never stop expanding, however, the gravitational forces were certain to slow the expansion as time went on due to the fact that our universe is full of matter and the attractive force of gravity pulls all matter together. However, in 1998, the Hubble Space Telescope (HST) observations of very distant supernovae showed that a long time ago; the universe was actually expanding more slowly than it is today. In other words, the expansion of the universe has not been slowing down due to gravity, as everyone expected, but it has been accelerating and something was causing this acceleration. Eventually, theorists still do not know what the correct explanation is but they have given the solution a name, it’s called the dark energy.
More is unknown than is known about dark energy, the amount of dark energy is known because we know how it influences the universe’s expansion. There Are three possible explanations of dark energy, One explanation is that it’s a property of space -yes space has many amazing properties, many of which are just beginning to be understood- Einstein was the first to realize that empty space can possess its own energy, furthermore, it’s possible for more space to come into existence. And because this energy is a property of space itself, it would not be diluted as the space expands. Additionally, as more space comes into existence, more of this space-energy will appear which will be the reason that the universe will expand faster and faster. Unfortunately, there are some issues regarding this fancy model and related to the cosmological constant.
8- Dark matter which constitutes 27% of the universe.

#InsaneCuriosity #MostMassiveObjectsInTheUniverse #TheBiggestStar #TheBiggestBlackhole

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The Truth Behind The Parallel Universe NASA Discovered!

The Truth Behind The Parallel Universe NASA Discovered!

From what the internet said it was, to what it’s really about, and what all this means about our lives, and more! Join us as we dive into the truth behind the “Parallel Universe” NASA “Discovered”.

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There is a certain “law” out there in the world today that everyone should know. It is one backed up by science, by history, by common sense, and more. Quite simply, that law is the law of “You Don’t Trust Everything You See On The Internet!” Granted, sometimes you see things on the internet that are so shocking that it CAN’T be true, and yet it is. But other times, you get lured in by something that seems shockingly true, and yet, it’s not.
Such was the case recently with the “discovery” of something that truly would’ve broken the universe as we know it. Because according to some, NASA had discovered a parallel universe. One where time didn’t flow normally. Instead, it flowed backward.
So let’s be like that parallel universe and rewind things for a bit, shall we? A little while back articles from the New York Post, Daily Star and Express stated “sources” that NASA had indeed discovered a parallel universe, and in this universe, time was flowing backwards ever since the point of the Big Bang. The internet went crazy with this potential discovery, especially as many wondered what it could mean in the large scale.
The idea of parallel universes is nothing new (as we discuss in another video of ours!), and there has been rampant speculation as to what they would be like, how they formed, and more. But it would be safe to say that in all of those theories, none of them had time running backwards, as that would be highly irregular, and how do you go backwards from the beginning of time itself?
Regardless of that answer, many people across the board started to go nuts on the internet trying to figure out the hows and whys as to how all of this happened. When the immediate answer was right in front of them. Not in regards to how it all worked, but rather, whether we could believe this to be true. Because The New York Post, the Daily Star and the Express aren’t exactly the most reliable of sources when it comes to major news breaks.
Not to mention, if you look at the articles from the papers, they’re all just quoting one another, and just as important, they’re citing a lot of information…in an incorrect fashion.
That’s right, NASA has NOT found a parallel universe where time flows backwards, not even close. Though that does raise the question…how did we get from there to here? Simple, NASA did find something, it’s just nothing on the level of a parallel universe…yet.
Before we dive into what REALLY is going on in the world of NASA, be sure to like or dislike the video, that way we can continue to improve our content for you the viewer! Also, be sure to subscribe to the channel, that way you don’t miss ANY of our weekly videos!
So where did this whole parallel universe mess really start? Believe it or not, it was in Antarctica. But not in the way you’re thinking. There’s an experiment going on down there that had some interesting findings as of late.
Scientists actually found evidence (signals) of fundamental particles that may defy our current understanding of physics. It might even just be an issue with how particles interact with ice.
Here’s a detailed breakdown of the experiment in the words of its lead research paper writer, Ibrahim Safa of UW–Madison.
“During the first three flights of the Antarctic Impulsive Transient Antenna (ANITA) experiment, the collaboration detected several neutrino candidates. Two of these candidate events were consistent with an ultra-high-energy up-going air shower and compatible with a tau neutrino interpretation. A third neutrino candidate event was detected in a search for Askaryan radiation in the Antarctic ice, although it is also consistent with the background expectation. The inferred emergence angle of the first two events is in tension with IceCube and ANITA limits on isotropic cosmogenic neutrino fluxes. Here, we test the hypothesis that these events are astrophysical in origin, possibly caused by a point source in the reconstructed direction.”
Notice that nowhere in there is any words like “parallel” or “universe” or “reversing time”. Which brings us to a tweet that Safa did after hearing about all the people saying that the team had found a parallel universe:
” NASA has discovered that y’all should not be getting your news from the new york post.”
Wise words indeed.

#InsaneCuriosity #ParallelUniverse #RecentSpaceDiscoveries

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What Lies Beyond Our Solar System?

What Lies Beyond Our Solar System?

From the planets, to the stars, to the systems, to the great unknown of the universe, join us as we explore what lies beyond our solar system!
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8. The Scope Of Our Own Solar System
Before we look beyond it, let’s take stock of our own solar system and what it all is like. There are 8 definitive planets (and more than that if you count Dwarf Planets like Pluto), we have one star, The Sun, that we orbit around, and within the confines of our system are asteroid belts, various rocks of various sizes, tons of solar rays and radiation, and a whole lot more.
Just in our solar system there is a LOT of stuff to explore. Which is sometimes hard to find because the length of our solar system is about 287.46 billion kilometers long. And even in the year 2020 we’re STILL finding out things about our solar system that are shocking and surprising. But of course, the main goal of humanity as a whole is to do what many have thought is unthinkable. To go BEYOND our solar system and to not just see it, but explore it, and live upon it. To truly become a species that is intergalactic instead of just living in one very small part of the universe.
7. What Lies Immediately Beyond Our Solar System
So let’s posit for a moment that you are able to go and get out of the reach of our solar system. Behind the Kuiper Belt, beyond the Heliosphere, what are you going to find when you reach that edge beyond? What will you see? What will you experience?
The honest and very simple answer…is nothing. Because you’ll be in what is known as Intergalactic Space. Or, the space between galaxies and systems. But to be clear, just because you don’t see anything, doesn’t mean that nothing is there.
“If you took a cubic meter, there would be less than one atom in it,” Michael Shull, an astronomer at the University of Colorado Boulder, told Live Science. “But when you add it all up, it’s somewhere between 50 and 80% of all the ordinary matter out there.”
Scientists are honestly deeply interested in this matter, or “Intergalactic Medium” because of how they feel it forms and even replenishes certain systems via the gas that it provides. The reason for this is that the medium is mostly hot, ionized hydrogen (hydrogen that has lost its electron) with bits of heavier elements such as carbon, oxygen and silicon thrown in. While these elements typically don’t glow bright enough to be seen directly, scientists know they’re there because of the signature they leave on light that passes by.
“IGM is the gas that feeds star formation in galaxies,” Shull said. “If we didn’t still have gas falling in, being pulled in by gravity, star formation would slowly grind to a halt as the gas [in the galaxy] gets used up.”
But because of its small numbers, when you’re floating through space, you’re almost literally floating through empty space. Which is why many note that all the planets and stars and celestial objects only fill up about 5% of the known universe. Everything else is minor matter, Dark Energy and Dark Matter.
6. Systems Beyond Our Own
Ok, so let’s say that you are able to reach another system. What would it be like? Well, that would depend on what you land upon.
Because there are at least 100 billion stars in the Milky Way, a spiral galaxy about 100,000 light-years across. The stars are arranged in a pinwheel pattern with four major arms, and we live in one of them, about two-thirds of the way outward from the center. Most of the stars in our galaxy are thought to host their own families of planets. Thousands of these extrasolar planets (or exoplanets) have been discovered so far, with thousands more candidates detected and awaiting confirmation. Many of these newly discovered planetary systems are quite different from our own.
In fact, part of the fun of astronomy in the eyes of many is going and seeing if you can indeed find a new planet, or star that hadn’t been noticed before, and seeing what details you notice about it. In fact, various agencies from NASA to the ESA and more have made their own satellites and probes and such that they’ve launched into space or our atmosphere to try and get better looks at planets and stars and see what we can find.
Some of the highlights for sure are many planets that are “Earth-Like” in structure or form or shape. Numerous kinds of stars from dwarf stars to binary stars, to Pulsars, Supernovas and more. They’ve found black holes at the center of most galaxies, and that’s still only scratching the surface of things.
4. Exoplanets
#InsaneCuriosity #TheSolarSystem #TheEdgeOfTheUniverse

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