Ep. 634: Milky Way's Mergers & Acquisitions

Astronomy Cast Ep. 634: Milky Way's Mergers & Acquisitions by Fraser Cain & Dr. Pamela Gay The Milky Way is a vast grand spiral today, but how did it get this way? Astronomers are starting to unravel the history of our galaxy, revealing the ancient collisions with dwarf galaxies, and how they came together to build the modern Milky Way.