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How Small Was The Universe At The Start Of The Big Bang? (www.forbes.com)

submitted 2 years ago by btaf45 to c/astronomy

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[–] firipu 3 points 2 years ago (1 children)

From what I understand, the big bang took place everywhere all at once. So I'm not sure that question really makes sense in this situation.

[–] btaf45 0 points 2 years ago (2 children)

It is talking about how big the now observable universe was at the beginning of the big bang. It's not talking about the entire universe. The observable universe is a perfect but finite sphere. So think of a sphere with a 2 meter to 20 kilometer diameter at the beginning inflating to sphere that now has an 880 yottameter (10^24 meters) diameter.

[–] firipu 1 points 2 years ago (1 children)

Oh, it wasn't a question, but an article. And by Ethan Spiegel nonetheless :). Thx for that, I love his content.

[–] btaf45 1 points 2 years ago

Yep, he is my favorite astronomy writer.