Season 2017 · Episode 45 of 45
Aired Dec 20, 2017
Extinction by Gamma-Ray Burst
Wed, Dec 20, 2017
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Find out about the last time and the next time the Earth will be hit by a Gamma-ray Burst.
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Airs
Wed, Dec 20, 2017
Show
PBS Space Time
433 episodes
Episode
S2017 · E45
in PBS Space Time