We didn't know where half the visible matter in the universe was, until now

Kuromantis
2020-10-09T16:13:21Z

Link URL: https://www.youtube.com/watch?v=Kp_kqamkYpw

Comments URL: https://tildes.net/~space/sia/we_didnt_know_where_half_the_visible_matter_in_the_universe_was_until_now

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