The Milky Way Feasted on a Smaller Galaxy 10 Billion Years Ago

The smaller galaxy’s stars within the Milky Way are shown with yellow arrows depicting their direction of motion. Credit: HUBBLE/ESA/NASA


In its younger days, the Milky Way devoured a smaller galaxy, and stars from the hapless victim still roam the skies today to tell the tale, a new study finds.

“This is a major event in the history of the galaxy,” says astronomer Amina Helmi of the University of Groningen in the Netherlands.

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