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Gaia clocks new speeds for Milky Way-Andromeda collision

7 Feb 2019, 15:00 UTC
Gaia clocks new speeds for Milky Way-Andromeda collision Orbits: E. Patel, G. Besla (University of Arizona), R. van der Marel (STScI); Images: ESA (Milky Way); ESA/Gaia/DPAC (M31, M33)

ESA’s Gaia satellite has looked beyond our Galaxy and explored two nearby galaxies to reveal the stellar motions within them and how they will one day interact and collide with the Milky Way – with surprising results.

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