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2026
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How far did Hubble calculate Andromeda to be, and why did that distance settle the debate?
Big Bang Theory
Galaxies and Large-Scale Structure
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Edwin Hubble proves existence of other galaxies
almanac
Related questions
How did Edwin Hubble use Leavitt's relation to prove the Andromeda nebula lay outside the Milky Way?
How did Maarten Schmidt realize the strange emission lines in 3C 273's spectrum were actually redshifted hydrogen?
What did Hubble's 1924 distance measurement to Andromeda's Cepheids ultimately prove about the Milky Way?
What did the 15.8% redshift in 3C 273's spectrum reveal about its distance from Earth?
How cold is the afterglow of the Big Bang today, and why has it cooled so much?
How did Genzel and Ghez track individual stars to prove something massive and invisible sits at the centre of the Milky Way?
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