Cosmic curiosity reveals ghostly glow of dead quasar
Friday, November 5, 2010 - 22:40
in Astronomy & Space
Astronomers have discovered that the strange-looking object discovered two years ago as part of the Galaxy Zoo citizen science project, called "Hanny's Voorwerp," is a large cloud of glowing gas illuminated by the light from a quasar that died out up to 70,000 years ago.