NASA warns of collision with Andromeda

In 4 billion years, our galaxy could crash head-on with Andromeda, our nearest neighbor. US space agency NASA said that “extraordinary precise observations” from NASA’s Hubble Space telescope that tracks Andromeda galaxy “remove any doubt that it is destined to collide and merge with the Milky Way.” It will take another 2 billion years for them “to completely merge under the tug of gravity and reshape into a single elliptical galaxy similar to the kind commonly seen in the local universe,” NASA added. Andromeda or M31, in a worst case scenario simulation, “slams into the Milky Way head-on and the stars are all scattered into different orbits,” Gurtina Besla of Columbia University in New York said.

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