Tag Archives: big bang

What If the Big Bang Wasn't the Beginning of the Universe?



In the beginning, there was nothing. Then bang. Our Universe emerged in an explosion of light and energy. Current theories say that it all began 13.7 billion years ago. Or did it? Let’s shed some light on this. So, how fast is the Universe expanding? Will the Universe and everything in it ever die? And why could our Universe have existed before the Big Bang? What’s a singularity?

Transcript and sources:

Get our 100 best episodes in one mind-blowing book:

Join this channel to get access to perks:

Watch more what-if scenarios:
Planet Earth:
The Cosmos:
Technology:
Your Body:
Humanity:

T-shirts and merch:
Suggest an episode:
Newsletter:
Feedback and inquiries:

What If elsewhere:
Instagram:
Twitter:
Facebook:
What If in Spanish:
What If in Mandarin:
Podcast:

What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

Produced with love by Underknown in Toronto:

#WhatIf #BigBang #Singularity #BeforeTheBigBang #CosmicInflation

source

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.
——————————————————————————————-
Subscribe for more videos:
Business Enquiries: lorenzovareseaziendale@gmail.com
——————————————————————————————-
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

source

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.

——————————————————————————————-
Subscribe for more videos:
Business Enquiries: lorenzovareseaziendale@gmail.com
——————————————————————————————-
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

source

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”.

——————————————————————————————-
Subscribe for more videos:
Business Enquiries: lorenzovareseaziendale@gmail.com
——————————————————————————————-
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

source

What If the Big Rip Happened Tomorrow?

What If the Big Rip Happened Tomorrow?

So we all know about the Big Bang, right? The cosmic explosion that created our Universe. Well, as with everything, there is a beginning … and an end.This is the Big Rip, the ultimate fate of our Universe. It will be a cosmic event that will tear apart galaxies, one by one. Stars, planets, you, everything will be eviscerated. Luckily, it’s not going to happen for another 20-30 billion years. But what if we weren’t so lucky? What if the Big Rip happened tomorrow? What would happen to our planet? And would this really be the end of everything we know?

Transcript and sources:
Subscribe to our second channel called “How to Survive”:

Can you translate this episode into another language? Add subtitles and we will link your YouTube channel in the description:

Watch more what-if scenarios:
Planet Earth:
The Cosmos:
Technology:
Your Body:
Humanity:

T-shirts and merch:
Suggest an episode:
Newsletter:
Feedback and inquiries:

What If elsewhere:
Instagram:
Twitter:
Facebook:
What If in Spanish:
What If in Mandarin:
Podcast:

What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way.

Produced with love by Underknown in Toronto:

source

What’s On The Other Side Of A Black Hole?

What’s On The Other Side Of A Black Hole?

From what they are, to where they might go, and beyond! Join me as we explore the question of, “where do black holes lead to?”

Subscribe for more videos:

Before we dive into the potential pathways that Black Holes may have, it’s important to know exactly what they are. Because while you might have a loose definition as to what they are and what they do, they’re actually far more complex than you might realize. Which is why many people in NASA and other space programs are fascinated by them.
If you’re looking for a technical definition, this is how NASA describes Black Holes:
“A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.”
This singularity as it is often called is a bit of a mystery in space, and for a very good reason. You see, black holes can form in large sizes, small sizes, and sometimes they don’t even need a fully fledged star to form at all! Which is scary in the sense that it means black holes can form in various ways.
Plus, since no light can actually escape them, it means that they can’t technically be seen by anyone. That being said, it’s easy to “see their work”, as the intense gravity of the Black Holes is enough to stretch objects from their “starting point” and slowly pull them to the Black Hole. This is known as spaghettification, because like a stretched piece of spaghetti, the object will get thinner and thinner until nothings exists but particles. And if you think that a Black Hole is limited in what it can absorb, you would be wrong. Very wrong in fact. If it is close enough, it’ll break down a star, a planet, multiple stars and planets at once, etc. It’s a question of range more than anything.
But there’s a catch to that, as you won’t be able to observe the spaghettification yourself. Why? Remember, no light escapes the void that is the Black Hole, so because of that, you’ll see the last known position of the object that light allows you to see. It’ll seem like they’re stuck in place and slowly going away until they’re gone. When in fact, they or it will be slowly pulled apart.
As we noted earlier, one of the main ways for a Black Hole to be born is to have a star collapse upon itself with such pressure that a Black Hole is a result. However, technically speaking, just about anything in the universe can become a Black Hole. How’s that for a scary thought?
It’s true though, and that’s one of the big “scaling” factors that you need to take into account when you’re talking about Black Holes. In fact, there’s actually a scarier thought that you need to consider, and that’s that black holes could technically be all around you right now. The only reason you’re not feeling their affects is that they’re not large enough to exert their own gravity.
The scale of a Black Hole is referred to as the Schwarzschild Radius. And becoming a Black Hole is impendent on you becoming so small and so dense that you can fit into this radius, and then potentially expand upon it. For example, a human being can become a Black Hole if condensed enough. However, the pressure needed to do that would not only be enormous, you could have to be shrunk 1 sextillion times smaller than a grain of sand. That’s REALLY small.

But that raises the question that we posed earlier, mainly, where do black holes lead to? I mean, if they can be of all sizes, and be anywhere from the size of a massive galaxy to the spec of sand on a beach, how can they lead to anywhere? How does that work? Would it work at all?
In the words of one scientist, “Who knows?”
“Falling through an event horizon is literally passing beyond the veil — once someone falls past it, nobody could ever send a message back,” he said. “They’d be ripped to pieces by the enormous gravity, so I doubt anyone falling through would get anywhere.”
Allow me to back up a little bit. Remember the whole “spagheticfication” thing I was talking about earlier? Well, the place that you would be “stretched to” is the horizon line of the black hole. Think of a black hole like a funnel. The big end of the funnel is the black hole that you “see” in space, and the rest of it is the core of the black hole that is hidden beneath its intense gravity. Now, if black holes DID lead somewhere, then like the funnel, you would have an access point through the core that you could go to. You get it?
The problem here is that most scientists believe based on their understanding of black holes that a horizon line is what awaits you at the end. So if you think about the funnel again, think about pinching the back end of it so that nothing could get out of said funnel. That’s what a lot of people think is in the center of a black hole, a literal end point. Which would be a problem for those who think it would lead anywhere…because it wouldn’t. It would end, o

source