r/planetarydefense

88 archived posts · May 2012 – Oct 2021

Planetary Defense

r/planetarydefense

A reddit dedicated to the discussion of hypothetical threats from the cosmos and strategies to counter them. We welcome conversation on everything from asteroid collisions, xenobiological contagions, alien invasions, and other dangers from space.

Created May 29, 2012 · private

88Archived posts

25Active months

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