The Milky Way Has Battle Scars from Colliding With a Ghostly Galaxy

Posted on Categories Discover Magazine

Our Milky Way, shown here in an artist’s concept, has strange “ripples” in its outlying regions. New research indicates those ripples were caused by a collision with a dwarf galaxy called Antlia 2. (Credit: ESA)

The Milky Way likely collided with a recently discovered dwarf galaxy called Antlia 2 less than a billion years ago, according to new research presented Wednesday at the 234th Meeting of the American Astronomical Society. 

The research, spearheaded by Sukanya Chakrabarti of the Ro

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