Edwin Hubble
The American astronomer whose 1929 observation that distant galaxies recede at speeds proportional to their distance established the expanding universe, giving his name to both the Hubble constant and the Hubble Space Telescope.
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Related Mysteries
Edwin Hubble influenced The Hubble Tension — Hubble's 1929 discovery of the universe's expansion established the constant whose present-day value the two measurement methods now dispute.
Concepts & Beliefs
Edwin Hubble influenced What Preceded the Big Bang — Hubble's discovery of cosmic expansion is the observational foundation Big Bang cosmology, and the questions about what preceded it, is built on.