But now, new research suggests that these incredibly fast-moving stars aren’t actually from the Milky Way at all, but are actually invaders from a completely different system.

May 5–12, 2016: The Ursa Major Moving Cluster is an excellent target for naked-eye and binocular observers, elliptical galaxy M105 in Leo offers small-telescope owners stunning views, and large ...

The galaxy appears to be moving away from the Milky Way at almost 3.5 million mph, according to the Hubble site. The Earth, meanwhile orbits the sun at 67,108 mph.