Milky Way is being invaded

From: USA Today | Date: June 1, 1998| Author: | Copyright information

Astronomers have known since 1994 that a small galaxy orbiting the Milky Way has entered it. Scientists made the discovery unexpectedly while analyzing stars in the concentrated, elliptical bulge at the enter of Earth's galaxy.

They realized that certain stars, which all essentially had the same velocity, were not moving in the proper manner to be in the center of the Milky Way. Those stars were found to be in a dwarf galaxy located along the line of sight to the center of Earth's galaxy, but on the far side of the Milky Way. "It's close enough that you can study individual stars in it the ...

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