ScienceDaily: Stars News |
| Dying supergiant stars implicated in hours-long gamma-ray bursts Posted: 16 Apr 2013 03:00 PM PDT Three unusually long-lasting stellar explosions discovered by NASA's Swift satellite represent a previously unrecognized class of gamma-ray bursts. Two international teams of astronomers studying these events conclude that they likely arose from the catastrophic death of supergiant stars hundreds of times larger than the sun. |
| Strange new bursts of gamma rays point to a new way to destroy a star Posted: 16 Apr 2013 11:47 AM PDT Scientists have pinpointed a new type of exceptionally powerful and long-lived cosmic explosion, prompting a theory that they arise in the violent death throes of a supergiant star. |
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