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1. Robert McNees (mcnees@mastodon.social)'s status on Tuesday, 20-Feb-2024 14:22:34 UTC Robert McNees

   Edwin Hubble sent a letter to Harlow Shapley OTD in 1924, describing data that placed the Andromeda Nebula outside our Milky Way.

   Shapley had long argued such objects must be inside our galaxy. He received the letter while meeting with Cecilia Payne-Gaposchkin in his office. After reading Hubble's message, he folded the letter, turned to his colleague, and said “Here is the letter that destroyed my universe.”

   • Robert McNees (mcnees@mastodon.social)'s status on Wednesday, 21-Feb-2024 02:49:47 UTC Robert McNees

     in reply to

     Happy 100th anniversary of letters that destroy universes.