“Back in 1917, when Einstein analyzed the “cosmological considerations” arising from his general theory of relativity, most astronomers thought the universe consisted only of the Milky Way, 100 billion or so stars. A stable universe- not collapsing or expanding.”~ Water Isaacson
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@studentoflife I didn’t know! We have come far since Einstein
@studentoflife It's so unusual , making it that much more beautiful... like a large exotic pink butterly 😄🩷🦋