Milky Way’s warp caused by galactic collision, Gaia suggests

On: March 3, 2020

Milky Way’s warp caused by galactic collision, Gaia suggests
Astronomers have pondered for years why our galaxy, the Milky Way, is warped. Data from ESA’s star-mapping satellite Gaia suggest the distortion might be caused by an ongoing collision with another, smaller, galaxy, which sends ripples through the galactic disc like a rock thrown into water.
phys.org
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