What Happened Before the Big Bang? Explained!

TLDRThe origin of the universe before the Big Bang is still unknown, and different theories speculate alternative ideas. The most popular theory is Eternal Inflation, which suggests our universe was created by a quantum fluctuation. However, there are other ideas, such as the Big Bounce and the Hawking no boundary proposal.

Key insights

🌌The Big Bang is not the beginning of everything, but rather the start of our universe as we know it.

✨Eternal Inflation suggests that our universe was created by a quantum fluctuation, and there may be infinitely many universes.

🔁The cyclic Universe theory proposes that the universe goes through cycles of expansion and contraction.

🌌The Hawking no boundary proposal suggests that before the Big Bang, there was no spacetime, only a four-dimensional space.

❓Unfortunately, due to a lack of available data, we may never know what happened before the Big Bang.

Q&A

Is the Big Bang the beginning of everything?

—No, the Big Bang is the beginning of our universe as we know it. It does not explain the origin of everything.

What is Eternal Inflation?

—Eternal Inflation is a theory that suggests our universe was created by a quantum fluctuation. It proposes the existence of infinitely many universes.

What is the cyclic Universe theory?

—The cyclic Universe theory suggests that the universe goes through cycles of expansion and contraction, with each cycle starting with a big bounce.

What is the Hawking no boundary proposal?

—The Hawking no boundary proposal suggests that before the Big Bang, there was no spacetime, only a four-dimensional space.

Will we ever know what happened before the Big Bang?

—Unfortunately, due to a lack of available data, we may never know what happened before the Big Bang.

Timestamped Summary

00:00In this video, we explore the question of what happened before the Big Bang.

00:30The Big Bang is not the beginning of everything, but rather the start of our universe as we know it.

04:14Eternal Inflation suggests that our universe was created by a quantum fluctuation, and there may be infinitely many universes.

06:17The cyclic Universe theory proposes that the universe goes through cycles of expansion and contraction.

06:53The Hawking no boundary proposal suggests that before the Big Bang, there was no spacetime, only a four-dimensional space.

07:43Unfortunately, due to a lack of available data, we may never know what happened before the Big Bang.

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