In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...
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One large Milky Way galaxy or many galaxies? 100 years ago, Edwin Hubble settled astronomy's 'Great Debate'A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known ... Estimating distances in astronomy is challenging. Think of how hard it is to estimate the distance of ...
(THE CONVERSATION) A hundred years ago, astronomer Edwin Hubble dramatically expanded ... Estimating distances in astronomy is challenging. Think of how hard it is to estimate the distance of ...
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