feb 072013
 
Forecasting a Supernova Explosion

  Type II supernovae are formed when massive stars collapse, initiating giant explosions. It is thought that stars emit a burst of mass as a precursor to the supernova explosion. If this process were better understood, it could be used to predict and study supernova events in their earliest stages. New observations from a team [continue reading]

nov 052012
 
Hypergiant Star Turns Out to be 'Missing Link'

  A team of scientists from six European countries reported on November 1, 2012 they have finalized a thirty years long investigation of a hypergiant star that crossed the Yellow Evolutionary Void. In that period the star’s surface temperature quickly rose from five to eight thousand degrees. With this discovery a crucial ‘missing link’ in [continue reading]

mei 032012
 
North star loses mass but still shines bright

  The North Star, the Pole Star, the Guiding Star, Polaris: Its many names reflect the many centuries humans have gazed northward to it for guidance. Because Earth’s North Pole is aligned with Polaris’ position in the sky, the star appears motionless, providing a steadfast beacon for early sailors and adventurers alike. But the star [continue reading]