What Caused the Big Bang?
Season 5 Episode 28 | 13m 12s
Every astronomy textbook tells us that soon after the Big Bang, there was a period of exponentially accelerating expansion called cosmic inflation. In a tiny fraction of a second, inflationary expansion multiplied the size of the universe by a larger factor than in the following 13 and a half billion years of regular expansion. This story seems like a bit of a … stretch.
Aired: 08/11/19Video has closed captioning.