Surprise: There was a universe before the Big Bang | Ethan Siegel

**Where Did the Universe Come From?**

For millennia, questions about the origins of the universe were left to poets, philosophers, and theologians. But in the 20th century, science took over the conversation—offering answers that surpassed even our wildest imaginations.

Astrophysicist Ethan Siegel breaks down the groundbreaking discoveries that led to our modern understanding of the universe’s origins. From Edwin Hubble’s discovery of distant galaxies to the Big Bang theory and the revolutionary idea of cosmic inflation, this video explores the fundamental forces that shaped everything we see today.

How did space and time evolve? What came before the Big Bang? And what mysteries are still left to solve? Find out in this deep dive into the science of our cosmic origins.

"Asking the question of, where did the entire universe come from, is no longer a question for poets and theologians and philosophers. This is a question for scientists, and we have some amazing scientific answers to this question that have defied even the wildest of our expectations."

Ethan Siegel, theoretical astrophysicist and science communicator, author of the James Webb Space Telescope book, "Infinite Cosmos," and writer of the science blog, "Starts With A Bang" joins us to explore the cosmic origins of our universe.

0:00 - Where did the entire universe come from?

0:57 - A question for scientists

1:43 - The quest for the beginning of the universe

2:21 - Hubble’s telescope

4:09 - Extragalactic objects

5:11 - Blueshifted vs redshifted

6:53 - General theory of relativity

7:50 - The cosmic egg

8:26 - The origin of The Big Bang

9:55 - A cosmological constant

14:24 - Scale invariant spectrum

15:13 - Testing for Cosmic Inflation

19:34 - Our cosmic origins

21:03 - Ethan Siegel, kilt influencer

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