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Alexxx [7]
3 years ago
14

In 1924, Edwin Hubble proved that the Andromeda Galaxy lay far beyond the bounds of the Milky Way, thus putting to rest the idea

that it might have been a cloud within our own galaxy. How was he able to prove this?
Social Studies
1 answer:
Vera_Pavlovna [14]3 years ago
7 0

Answer:

By observing individual Cepheid variable stars in Andromeda and applying the period-luminosity relation

Explanation:

In 1924, Edwin Hubble proved that the Andromeda Galaxy lay far beyond the bounds of the Milky Way, thus putting to rest the idea that it might have been a cloud within our own galaxy. He was able to prove this BY OBSERVING INDIVIDUAL CEPHEID VARIABLE STARS IN ANDROMEDA AND APPLYING THE PERIOD-LUMINOSITY RELATION

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