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2010-04-20 06:55:00

In its first five years in orbit, NASA's Swift satellite has given astronomers more than they could have hoped for. Its discoveries range from a nearby nascent supernova to a blast so far away that it happened when our universe was only 5 percent of its present age. Swift primarily studies gamma-ray bursts (GRBs) -- the biggest and most mysterious explosions in the cosmos. On April 13, the spacecraft's "burst-o-meter" cataloged its 500th GRB. "On the one hand, it's just a number, but on the...

2005-10-05 14:16:16

An international team of scientists using three NASA satellites and a host of ground-based telescopes believes it has solved the greatest remaining mystery of the mysterious gamma-ray bursts (GRBs), the most powerful explosions in the universe. The shorter of two versions of these bursts appear to be caused by the collision of closely orbiting neutron stars or one of those compact stars and a black hole, said Don Lamb, the Louis Block Professor in Astronomy & Astrophysics at the...


Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
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