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  • Hey there and welcome to Life Noggin.

  • Just the other day, I was exploring my world with Triangle Bob and we found a place my animator forgot to design.

  • The end of my world is just a big, scary cliff to nowhere!

  • But you can float around, so it's kinda cool.

  • It did have me wondering though, what's at the end of your universe?

  • If we want to know what's at the end of the universe, we should start at the beginning.

  • There are many different ideas for how our universe began, but the most popular one is the Big Bang Theory.

  • Nope, guys get out of here!

  • The Big Bang Theory was first proposed in the 1920's, saying that the universe once started out super small.

  • From its tiny beginnings, the universe stretched and expanded until it became as big as it is now.

  • According to NASA, if we looked at the universe one second after the Big Bang, we would most likely see a 10-billion degree sea of particles, such as neutrons, protons, and electrons.

  • That's really hot!

  • As everything expanded and took up more space, it all cooled down.

  • Particles grouped together and formed atoms.

  • These atoms gave birth to stars and galaxies and molecules, and eventually the universe was filled with all the planets, people, and lovable internet friends that you have today!

  • And that's not all.

  • Our universe could still be expanding and stretching, and might do so for a very long time.

  • Maybe forever!

  • It's all super cool to think about, but why is the Big Bang the leading theory?

  • Do we have any proof?

  • Well, around the same time that the Big Bang Theory was introduced, no guys!

  • Please get out of here!

  • I'm not talking about you.

  • Edwin Hubble made an interesting observation.

  • He noticed that other galaxies were moving away from us in all directions.

  • Not only that, but the farther apart galaxies were from us, the faster they would seem to be moving away.

  • Hubble's observation was so important because it showed that the universe is still expanding.

  • If things are moving apart, it stands to reason they were once closer together.

  • The discovery of the cosmic microwave background, or CMB for short, also helped give credit to the Big Bang Theory.

  • Since the Big Bang says that our early universe was a very hot place that eventually cooled down, there should be leftover radiation.

  • Robert Wilson and Arno Penzias were the first to find the radiation while they were building a radio receiver.

  • Since then, we've learned a lot about the CMB from missions such as NASA's Cosmic Background Explorer and the Wilkinson Anisotropy Probe.

  • We now know that CMB radiation is not only very cold, close to absolute zero in fact, but it's also pretty uniform throughout the universe.

  • This uniformity is why it makes sense that it all came from one place, like the Big Bang.

  • So, if the universe is still expanding, what's at the end of it?

  • Well, we can't know for sure right now and there's a good chance that we never will.

  • That's because the universe doesn't just seem to be expanding, but also getting faster as it does.

  • If it doesn't stop, we'll probably never be able to find a way to go fast enough to reach it, since we believe it's already expanding faster than the speed of light.

  • Maybe one day somehow we'll find out, but until then me and Triangle Bob are going to float in the nothingness.

  • It's really calming!

  • Wait a that my dad?

  • So what do you think is at the end of the universe?

  • Let me know in the comment section below!

  • Curious to know if there are actual parallel universes?

  • Check out this video!

  • As always, my name is Blocko and this has been Life Noggin.

  • Don't forget to keep on thinking!

Hey there and welcome to Life Noggin.

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What's At The End Of The Universe?

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    Evangeline posted on 2021/02/27
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