In the 1920s, the work of the brilliant astronomer Edwin Hubble revealed the universe was expanding. But it was a Belgian preist named Georges Lemaitre who concieved of the idea that the universe began in the distant past. Today, we call this idea the big bang theory.

SEE CHRIS GRANT SPEAK IN PERSON:

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EDITED BY:

Jilyana Solis

REFERENCES:

'Lonely Hearts of the Cosmos' by Dennis Overbye

'Hubble, Humason, and the Big Bang: The Race to Uncover the Expanding Universe' by Ron Voller

'The Preist who Proved Einstein Wrong' by Marcelo Gleiser

BigThink.com

MUSIC:

"Nonstop" Kevin MacLeod (incomptech.com)

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"Heavy Heart" Kevin MacLeod (incomptech.com)

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"Ossuary 1: A Begining" Kevin MacLeod (incomptech.com)

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"Thunder Dreams" Kevin MacLeod (incomptech.com)

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