On Dec. 15, 1612, the Andromeda galaxy was seen through a telescope for the first time by a German astronomer named Simon Marius. [‘On This Day in Space’ Video Series on Space.com] The Andromeda ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. A panoramic view of the neighboring Andromeda galaxy, located 2.5 million light-years away, ...

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This is a wide-angle view of the distribution of known satellite galaxies orbiting the large Andromeda galaxy (M31), located 2.5 million light-years away. The Hubble Space Telescope was used to study ...

Astronomers announced last week that they had completed a decade-long, meticulous effort to assemble a full portrait of our ...

Located 2.5 million light-years away, the majestic Andromeda galaxy appears to the naked eye as a faint, spindle-shaped object roughly the angular size of the full Moon. What backyard observers don't ...