Stars at the Edge of our Galaxy May Have Been Stolen

"We see evidence for streams of stars connected to the core of the galaxy, and indicating that this dwarf galaxy passed multiple times around the Milky Way center and was ripped apart by the tidal gravitational field of the Milky Way. We are all familiar with the tide in the ocean caused by the gravitational pull of the moon, but if the moon was a much more massive object - it would have pulled the oceans apart from the Earth and we would see a stream of vapor stretched away from the Earth."