gamma-ray burst
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- PBS - Seeing in the Dark - Gamma-ray burst
- NASA - Goddard Space Flight Center - Imagine the Universe! - Gamma-ray Bursts
- LiveScience - Did Deadly Gamma-Ray Burst Cause a Mass Extinction on Earth?
- Space.com - What is a Gamma-Ray Burst?
- Cosmos - Gamma Ray Burst
- American Museum of Natural History - Capturing Phantoms: Gamma-Ray Bursts
- National Center for Biotechnology Information - PubMed Central - Gamma-ray bursts and their use as cosmic probes
- European Spacce Agency - Brightest gamma-ray burst illuminates our galaxy as never before
- Related Topics:
- universe
gamma-ray burst, an intense, nonrepeating flash of high-energy gamma rays that appears unpredictably at arbitrary points in the sky at a rate of about one per day and typically last only seconds. First discovered in the 1960s, these powerfully luminous events long remained completely mysterious, since there seemed no evidence of their sources at visible or radio wavelengths. Such evidence was first found in 1997, and the sources are now known to be among the most distant objects in the universe. The objects are thought to be collapsing hypergiant stars or, perhaps in some cases, merging neutron stars. There also exists a small group of much weaker, repeating bursts, which are identified with more local objects.