Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Science & Medicine 55
Natural Sciences 19

Astronomy Cast brings you a weekly fact-based journey through the cosmos.


Ep. 122: How Old is the Universe

January 5th, 2009

Episode 138 of 460 episodes

We did a wildly popular three part series about the center, size and shape of the Universe. But every good trilogy needs a 4th episode. This week we look at age of the Universe. How old is the Universe, and how do we know? And how has this number changed over time as astronomers have gotten better tools and techniques?

Featured Podcast