txt.sour.is @<xkcd-com https://feeds.twtxt.net/xkcd-com/twtxt.txt> "**Moon Armor Index** Astronomers are a little unsure of the applicability of this index, but NASA's Planetary Protection Officer is all in favor ..."

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Sun, Mar 17 18:00 (8w ago)

Moon Armor Index

Astronomers are a little unsure of the applicability of this index, but NASA's Planetary Protection Officer is all in favor.

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