12 Season
397 Episode
PBS Space Time - Season 2020 Episode 16 How We Know The Universe is Ancient
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?
- Country : United States of America
- Genre : Documentary, Talk
- Director :
- Cast : Matthew O’Dowd