jan 252013
 
Red Explosions Reveal Secret Life of Binary Stars

  A University of Alberta professor has revealed the workings of a celestial event involving binary stars that produce an explosion so powerful its luminosity ranks close to that of a supernova, an exploding star. Hubble space telescope images show an expanding burst of light from the red supergiant star V838 Mon. Image Credit: NASA/ESA Theoretical [continue reading]

nov 142012
 
Mystery Dust Around a Dead Star with a Close Companion Found

  Astronomers using data from NASA’s Wide-field Infrared Survey Explorer, or WISE, have discovered dust in an unusual place–just outside the reach of a binary star system with a short 3-hour orbit. The binary consists of a white dwarf with a red dwarf companion separated by a distance slightly larger than the radius of the [continue reading]