GREEN BANK, W.Va., June 12 (UPI) -- Two galaxies in the neighborhood of our own Milky Way had a close encounter billions of years ago and may have even brushed each other, U.S. astronomers say.
Observations by the National Science Foundation's Green Bank Telescope in West Virginia confirm a disputed 2004 discovery of a hydrogen gas "bridge" streaming between the giant Andromeda Galaxy, also known as M31, and the Triangulum Galaxy, or M33, the National Radio Astronomy Observatory reported Monday.