jan 042013
Anne's Picture of the Day: The Skull Nebula

 January 4, 2013 The Skull Nebula, a planetary nebula in Cetus Image Credit: NASA/JPL-Caltech/J. Hora (Harvard-Smithsonian CfA) The Skull Nebula (NGC 246) is a rather old planetary nebula of some 4 – 6 light-years across that surrounds a dying star, the white dwarf HIP 3678. It is located roughly 1,600 light-years away in the constellation [continue reading]