dec 302013
 
Anne's Image of the Day: The Butterfly Nebula

December 30, 2013 The Butterfly Nebula, a planetary nebula in Monoceros Image Credit: NASA/ESA and The Hubble Heritage Team (AURA/STScI) The Butterfly Nebula (NGC 2346) is a bright, unusual shaped bipolar planetary nebula with a diameter of about one-third of a light-year, located some 2,000 light-years away near the celestial equator in the constellation of [continue reading]