Big Bang confirmed again; this time by the Universe’s first atoms | by Ethan Siegel | Starts With A Bang! | Medium

Our most powerful telescopes can peer back into the ultra-distant Universe, but can only see the pristine clouds of gas if there’s a very, very distant light source beyond to illuminate them. Image credit: NASA.
Big Bang confirmed again; this time by the Universe’s first atoms
If the expanding Universe and the cosmic microwave background didn’t convince you, this intricate, spectacular prediction should.
Ethan Siegel
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Published inStarts With A Bang!
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6 min read·
Jul 18, 2017
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“In the current cosmological model, only the three lightest elements were created in the first few minutes after the Big Bang; all other…
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Written by Ethan Siegel
227K Followers
·Editor for Starts With A Bang!
The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.
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