Post B5laXAatMoOAb5vS8u by michael_w_busch@mastodon.online
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 (DIR) Post #B5laXAatMoOAb5vS8u by michael_w_busch@mastodon.online
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       RE: https://mastodon.com.br/@xkcd/116480390342730879As an astronomer; I once spent six months working on a project that turned out to be impossible because Earth has an atmosphere.RT: https://mastodon.com.br/users/xkcd/statuses/116480390342730879