The Big Bang and Expansion of the Universe
By ari_h, Updated
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13.8 billion years ago, the Big Bang occurred in which the Universe was born.
The ingredients for the Big Bang had to be just right for everything to be created, what scientists call the Goldilocks Conditions. However, no one knows what those ingredients are.
After, all the stars, planets, asteroids, etc. were created, including our home, Earth.
Although no one is quite sure what came before the Big Bang, or if there even was something before, I think there may have been a universe that came before ours. Possibly, there was a point in the past when an "older" universe collapsed or ended, and a new explosion of the energy resulted in the universe we now inhabit. This would mean that the cycle is never ending and our universe will eventually have the same occurrence. This idea is known as "the big bounce."
We also now know that the Universe is expanding, as confirmed by redshifts and blueshifts of Hubble's Law.
We are not sure what the universe is expanding into, but I believe in the idea of a multiverse, meaning infinite universes. These universes may exist outside of each other, connecting to the theory of parallel universes. This is when there is another version of each person on a planet just like Earth. The theory goes that we carry out each day almost the same, but with minor differences in our lives. What theories do you have about the universe?
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