Science
The Andromeda galaxy’s halo is even more massive than scientists expected, Hubble telescope reveals – Space.com
Galactic halos are both more massive and more complicated than scientists realized, according to new observations from the Hubble Space Telescope
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The venerable telescope turned its sights on the neighboring Andromeda galaxy using dozens of different quasars to map the galactic halo. Andromeda, more formally known as M31, is a spiral-shaped galaxy about the same size of the Milky Way
galaxy we live in, with about 1 trillion stars. Cosmically, it’s right next door, just 2.5 million light-yea…
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