Science
Astronomers find origins of “galactic cannibalism” with discovery of ancient dark matter halo – CBS News
“One galaxy may have eaten one of its slightly smaller, more primitive neighbors, that then spilled all its stars into the outskirts,” an MIT professor said.
Astronomers have detected what they believe to be one of the earliest instances of “galactic cannibalism” — when one galaxy consumes one of its smaller neighbors — in an ultrafaint dwarf galaxy called Tucana II. The findings stem from the discovery of an ancient dark matter halo, located in a galaxy 163,000 light years from Earth.
Tucana II is just one of dozens of dwarf galaxies surrounding the Milky Way. They are thought to be artifacts left over from the first galaxies in the universe — and…
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