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Measurements from the Gaia spacecraft have adjusted predictions for when and how the Milky Way will collide with the nearby Andromeda galaxy.

Our galaxy, the Milky Way, is destined to collide with its largest neighbor, a sparkling collection of stars called the Andromeda galaxy. This cataclysm has been foretold by well-known physics, and astronomers know that when the space dust clears, neither galaxy will look the same: Within a billion years or so of first contact, the two will merge and form a much larger, elliptical galaxy.

But new measurements of stars within Andromeda, made by the European Space Agency’s Gaia space telescope, are changing predictions for when, and exactly how, that collision will go down.

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Alex
Arizona City, United States
09.02.2019 (12 days ago)
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