When Milky Way and Andromeda Collide, Earth Could Find Itself Far From Home

If Homo sapiens can stick it out on Earth for another two billion years, our descendants may witness quite a show in the night sky. Researchers estimate that the Milky Way will collide with its nearest neighbor, the Andromeda galaxy, at around that time—well before the sun collapses into a white dwarf, perhaps destroying the Earth in the process.

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