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Neutron stars and black holes.
Oct 31, 2003 The aurora reports are in Universe Today readers from around the world have kept their eyes to the sky over the last few days and seen some of the best auroras in several decades. In the Northern Hemisphere, I've heard reports from as far south as Florida and Texas, while people in Australia and New Zealand have been treated to a show as well. It looks like Northern Europe, especially Scotland had some of the best auroras - for two straight evenings.
Oct 31, 2003 The latest image taken by the Chandra X-Ray Observatory shows that Galaxies aren't as serene as they look in optical light. The observations began in 1999 when Chandra was tuned in to watch the aftermath of a supernova in Galaxy NGC 1637. Over the course of 21 months Chandra watched the Galaxy and saw intense x-ray flashes from neutron stars and black holes. This behaviour is consistent with the interactions these objects can have with companion stars.
Oct 31, 2003 The European Space Agency's Cluster spacecraft were perfectly positioned to watch the effect of the recent solar storms on the Earth's magnetosphere. Normally the magnetosphere bubbles out in front of the Earth by about 64,000 km, but during the storm it was down to only 43,000 km. The speed at which the magnetosphere compressed will help scientists calculate the power of the storm, and make more accurate predictions for what will happen in future storms.
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