supernova

Modeling the bizarre remnants of a supernova

When stars of a certain large size and energy run out of fuel, the result is a supernova explosion that can be spotted with the naked eye just once in a lifetime. Some leave behind a relatively spherical supernova remnant. However, others expand within dense clouds of gas and dust, so the leftover shells can …

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Supernovae may generate life-giving carbon atoms faster than thought

NASA Michigan State University scientists have found that exploding stars create life-giving carbon atoms much faster than they thought. However, that discovery has created another mystery that could upend current theories of element creation and help fuel new science in the areas of astronomy and fusion. One of the most abundant elements on Earth, carbon, …

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Researchers propose a supernova triggered the Late Devonian mass extinction

Enlarge / The Cassiopeia A supernova which left this remnant behind occurred about 11,000 light years away—much too far to pose a significant threat—and its wavefront likely reached Earth about 300 years ago. NASA/JPL-Caltech A paper released this week by University of Illinois Urbana-Champaign astronomy and physics professor Brian Fields makes a case for distant supernovae …

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