Currently, two galaxies similar to the Milky Way and Andromeda (M31) galaxies are separated by about 1.90 million light-years and moving toward each other at about 141.00 km/s. Estimate how long it may take for the two to collide.
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Currently, two galaxies similar to the Milky Way and Andromeda (M31) galaxies are separated by about 2.90 million light-years and moving toward each other at about 121.00 km/s. Estimate how long it may take for the two to collide. years
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