https://pasadenanow.com/main/a-small-piece-of-glass
A glass plate revealed the universe extends beyond the Milky Way. Dr. Edwin Hubble's 1923 discovery used a Cepheid variable star to measure distance. The original plate is now on display at the Hale Library.
Image:
#astronomy #hubble #galaxy
A glass plate revealed the universe extends beyond the Milky Way. Dr. Edwin Hubble's 1923 discovery used a Cepheid variable star to measure distance. The original plate is now on display at the Hale Library.
Image:
#astronomy #hubble #galaxy
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