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Article results for “gamma ray bursts

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Can gamma-ray bursts destroy life on Earth?

The explosions — gamma-ray bursts thought to occur when two stars collide — can release tons of high-energy gamma-ray radiation into space. The researchers found that such blasts could be contributing to the depletion of the Earth's ozone layer.

How a 'monster' gamma-ray blast started — and why we were spared

A planet caught in one of these bursts would lose its atmosphere instantly and would be left a burnt cinder, astronomers say. Scientists might be able to detect warning signs of an impending gamma-ray burst. But if a burst were headed for Earth — and the ...

Fermi Gamma-ray Space Telescope gets a new lease on life

During its five-year mission, Fermi successfully dodged space junk and helped astronomers investigate gamma-ray bursts: the most powerful explosions in the known universe. The probe's Gamma-ray Burst Monitor (GBM) instrument sees the entire sky except for ...

Gamma-ray probe gets new name and fame

Fermi recently completed its 60-day checkout and calibration period, and has officially begun its mission to survey the sky continuously and investigate any detected sources of gamma-ray bursts. These few-seconds-long fireworks are the most luminous ...

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Gamma-ray burst - Wikipedia, the free encyclopedia

Updated April. 18, 2014

Gamma-ray bursts (GRBs) are flashes of gamma rays associated with extremely energetic explosions that have been observed in distant galaxies. They are the brightest ...

Gamma-ray bursts - NASA

Updated April. 16, 2014

GRB history. Burst Behind the Sun Reveals Magnetic Charm of Distant Explosion. NASA Detects One of Closest and Brightest Gamma Ray Bursts. Race to Gamma Ray Burst ...

Gamma-Ray Bursts - University of California, Berkeley

Updated April. 17, 2014

What is a gamma-ray burst? We define a gamma-ray burst based on its observational properties: an intense flash of gamma rays, lasting anywhere from a fraction of a ...

NASA - Gamma Ray Bursts

Updated April. 16, 2014

Swift Launches Successfully. A superb launch and flawless liftoff for NASA's Swift spacecraft to study the mystery of gamma-ray bursts. › View This Video