2023 October 06 - Edwin Hubble Discovers the Universe
NASA’s Astronomy Picture of the Day
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Show Notes
In today's image, we see a photographic plate of the Andromeda Galaxy marked by Edwin Hubble one hundred years ago with the identification of variable stars. This discovery led to an increase in our understanding of the size of the universe showing that Andromeda was not a nebula within our galaxy but actually another galaxy or island universe of its own.
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