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Edwin Powell Hubble
Portrait of Edwin Powell Hubble.

NASA and STScI

The Hubble Space Telescope was named after astronomer Edwin Powell Hubble (1889–1953), who made some of the most important discoveries in modern astronomy. In the 1920s, while working at the Mt. Wilson Observatory Edwin Hubble showed that some of the distant, faint clouds of light in the universe were actually entire galaxies—much like our own Milky Way. The realization that the Milky Way is only one of many galaxies forever changed the way astronomers viewed our place in the universe.