One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate.’
In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...
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100 years ago, Edwin Hubble proved our Milky Way galaxy isn't alone
According to historical records, we have one man to thank for this: Edwin Hubble. That's certainly ... 300,000 light years across, and that our solar system was 50,000 light-years from the center.
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How Edwin Hubble won the Great Debate
Its shape, he calculated, was disklike and the solar system ... our modern view of the universe. Everything we study today is based on his work." After 400 years of uncertainty, Edwin Hubble ...