Story thread · 9 reports / 9 sources
Our Milky Way galaxy appears to have flipped 90 degrees long ago. But why?
space.com · 14d
An artist's impression of the collision between the Milky Way and the Gaia-Sausage-Enceladus dwarf galaxy. The arrows indicate the motion of stars from the dwarf.
First report: What is the Milky Way? It’s our home galaxy — earthsky.org, 16d
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