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Star's Orbit Shift Reveals Galaxy's Collision With Milky Way 11.5 Billion Years Ago
Video Credit: GeoBeats
Published on January 14, 2020 - Duration: 00:49s
Star's Orbit Shift Reveals Galaxy's Collision With Milky Way 11.5 Billion Years Ago
Scientists have long known that the Milky Way is what it is today because of mergers with other galaxies, but exactly when those occurred has been less clear.