Well, maybe not a super galaxy, but at least a hungry one. It was reported by the BBC that the Andromeda galaxy has consumed other galaxies in the past. A team of scientists noticed that there were stars in the Andromeda galaxy that shouldn't have been there, and was later reasoned to be remnants of a dwarf galaxy.
The Andromeda galaxy is the same one that is supposed to collide with our own Milky Way in about 3-billion years. It is 2.5 light years from Earth and close enough that we can make the stars in it.
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