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LiveScience
LiveScience
Tia Ghose

Science history: Edwin Hubble uncovers the vastness of the universe with discovery of 'standard candle' — Oct. 5, 1923

A photo of the Andromeda galaxy with four insets showing the variable brightness of M31.
QUICK FACTS

Date: Night of Oct. 5, 1923

Where: Mount Wilson Observatory, near Pasadena, California

Who: Edwin Hubble

On the night of Oct. 5 to 6, 1923, Edwin Hubble discovered a new star — and revealed the utter vastness of the universe.

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