Milky Way isn't a flat disk, it's corrugated
Wednesday, March 11, 2015 - 13:40
in Astronomy & Space
Brooks HaysTROY, N.M., March 11 (UPI) -- The Milky Way's galactic disk isn't flat -- it resembles the undulating ripples seen after a pebble is tossed into a pond -- making it much bigger than thought.