12:50
PBS Space Time
The Doomsday Argument
A simple statistical argument tells us that the doom of our species is much, much closer.
What Caused the Big Bang?
PBS Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth. Host Matt O'Dowd breaks down both the basic and incredibly complex sides of space and time.
What Caused the Big Bang?
Season 5 Episode 28 | 13m 12s | CC
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.
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