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One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate’Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside ...
At a meeting of the American Astronomical Society in January 1925, a paper read by one of his colleagues on his behalf reported that the Andromeda nebula, also called M31, was nearly a million ...
The Hubble Space Telescope has provided the most detailed survey of the Andromeda galaxy, revealing new clues about its ...
A century ago, Edwin Hubble first established that this so-called "spiral nebula" was actually very ... Photometry of over 90 Million Stars in M31, The Astrophysical Journal (2025).
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