okt 032013
Anne's Image of the Day: Irregular Galaxy UGC 5189

October 3, 2013 UGC 5189, an irregular galaxy in Leo Image Credit: X-ray: NASA/CXC/Royal Military College of Canada/P.Chandra et al.; Optical: NASA/STScI UGC 5189 is an irregular galaxy of about 36,000 light-years across that lies some 163 million light-years away from Earth in the constellation of Leo (the Lion), while it is speeding away from [continue reading]

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]