jan 132013
Nearby Dwarf Galaxy and Possible Protogalaxy Discovered

  Peering deep into the dim edges of the distorted Pinwheel Galaxy in the constellation Ursa Major (the Great Bear), astronomers at Case Western Reserve University and their colleagues have discovered a faint dwarf galaxy and another possible young dwarf caught before it had a chance to form any stars. The Pinwheel Galaxy. Image Credit & [continue reading]

jan 112013
Anne's Picture of the Day: The Pinwheel Galaxy

January 11, 2012 The Pinwheel Galaxy, a Grand Design spiral in Ursa Major Image Credit & Copyright: Robert Gendler (http://www.robgendlerastropics.com) The Pinwheel Galaxy (also known as Messier 101 or NGC 5457) is a giant asymmetrical spiral galaxy of about 170,000 light-years across (what makes it one of the largest disk galaxies known), located 21 – [continue reading]