Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Science & Medicine 25
Natural Sciences 10

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


Episode 23: The Drake Equation

February 12th, 2007

Episode 23 of 460 episodes

If you're wondering how many extraterrestrials there are in our galaxy, you just have to use a simple equation developed by astronomer Frank Drake in 1961. Just find out how many stars there are, how many support life, how many advanced societies form, and a few other details and we'll be set.

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