Remnants

The Andromeda galaxy, which may have been growing by cannibalizing smaller galaxies.

Galactic cannibal Andromeda feasts on smaller galaxies, reveal cosmic remnants

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Andromeda, the Milky Way’s neighboring spiral galaxy, may be a cosmic cannibal that grew by swallowing smaller galaxies. Astronomers came to this conclusion by observing a globular cluster of stars called the Dulais Structure, named after the Welsh term meaning “dark stream”, which now dwells in Andromeda but seems to come from outside galaxy. The …

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Andromeda contains the remnants of a recent "feeding event"

Andromeda contains the remnants of a recent “feeding event”

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There is growing evidence that galaxies grow by merging with other galaxies. Telescopes like Hubble have captured dozens of interacting galaxies, including well-known galaxies like Arp 248. The Andromeda Galaxy is the closest large galaxy to the Milky Way, and a new study shows our neighbor has consumed other galaxies at two distinct epochs. “A …

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