PBS Space Time

Are We Alone? Galactic Civilization Challenge

Season 2 Episode 21 | 6m 19s | Video has closed captioning.

The Drake Equation tells us the likelihood that there are other advanced technological civilizations waiting for us among the stars. In this episode of Space Time we challenge you to use the Drake Equation to help us determine how near or far these alien races may be.

Aired: 08/07/17

Rating: NR

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Problems Playing Video? | Closed Captioning