One large Milky Way galaxy or many galaxies?
In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...
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One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate’
A hundred years ago, astronomer Edwin Hubble dramatically expanded ... which captures the intensity of light from blue to red. Astronomers call a shift to longer wavelengths a redshift.
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One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate’
Chris Impey, University of Arizona (THE CONVERSATION) A hundred years ago, astronomer Edwin Hubble dramatically ... of light from blue to red. Astronomers call a shift to longer wavelengths ...