Edwin Powell Hubble1924
Using Cepheid variables in Andromeda, Hubble derives a distance large enough to establish that Andromeda is an independent galaxy outside the Milky Way, helping settle the island-universe debate.
United States of America · Science / Astronomy. Chronological records rendered directly from the World History Database.
Using Cepheid variables in Andromeda, Hubble derives a distance large enough to establish that Andromeda is an independent galaxy outside the Milky Way, helping settle the island-universe debate.
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