New evidence shows crash with Antlia 2 gave the Milky Way the ripples in its outer disc

New evidence shows crash with Antlia 2 gave the Milky Way the ripples in its outer disc
The newly-discovered dark dwarf galaxy Antlia 2’s collision with the Milky Way may be responsible for our galaxy’s characteristic ripples in its outer disc, according to a study led by Rochester Institute of Technology Assistant Professor Sukanya Chakrabarti.
phys.org
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