Space.com: A mysterious river of gas flowing into the Milky Way has stars inside after all

Astronomers think the gas that makes up the stream was torn from the dwarf galaxies by the gravitational pull of the Milky Way. The new observations may reveal more about the stream's nature and assist scientists who seek to understand how it interacts with our galaxy. As of now, scientists say, the stream appears to be sort of falling into the Milky Way.