Swift makes best-ever ultraviolet portrait of Andromeda Galaxy
Wednesday, September 16, 2009 - 12:22
in Astronomy & Space
GREENBELT, Md. -- In a break from its usual task of searching for distant cosmic explosions, NASA's Swift satellite has acquired the highest-resolution view of a neighboring spiral galaxy ever attained in the ultraviolet. The galaxy, known as M31 in the constellation Andromeda, is the largest and closest spiral galaxy to our own.