Swallow Thy Neighbor: Strong evidence of galactic cannibalism

By Ron Cowen, 15:49 PM April 15, 2008

It's a violent world out there, and many large galaxies have the corpses to prove it. These massive galaxies, including our own Milky Way, are surrounded by streams of gas and stars, the fossil remains of dwarf galaxies that they tore apart long ago (SN: 7/7/01, p. 5: Available to subscribers at Andromeda feasts on its satellite galaxies). But examples of dwarf galaxies still in the process of giving up their material to a larger partner have proved more elusive, even though the standard the...

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