PBS Space Time

How We Know The Universe is Ancient

Season 6 Episode 14 | 14m 1s Video has closed captioning.

The universe is precisely 13.8 billion year old - or so our best scientific methods tell us. But how do you learn the age of the universe when there’s no trace left of its beginnings?

Aired: 05/29/20

Rating: NR

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Problems Playing Video? | Closed Captioning