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[Science Daily] Hubble maps giant halo around Andromeda Galaxy - Science Daily - 2020-09-01
Hubble maps giant halo around Andromeda Galaxy
In a landmark study, scientists using NASA's Hubble Space Telescope have mapped the immense halo of gas enveloping the Andromeda galaxy, our nearest large galactic neighbor.
https://www.sciencedaily.com/releases/2020/08/200827141345.htm