RHESSI satellite captures giant gamma-ray flare

Astronomers around the world recorded late last year the brightest explosion ever of high-energy X-rays and gamma rays - a split-second flash from the other side of our galaxy that was strong enough to affect the Earth's atmosphere.
The flash, called a soft gamma repeater flare, reached Earth on Dec. 27 and was detected by at least 15 satellites and spacecraft between Earth and Saturn, swamping most of their detectors. Some of the best observations were recorded by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI), a NASA/University of California, Berkeley, satellite launched in 2002 to study gamma-ray emissions from solar flares.

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<p><a href="http://www.physorg.com/news3113.html">RHESSI satellite captures giant gamma-ray flare</a></p> <p>Astronomers around the world recorded late last year the brightest explosion ever of high-energy X-rays and gamma rays - a split-second flash from the other side of our galaxy that was strong enough to affect the Earth's atmosphere. <br>The flash, called a soft gamma repeater flare, reached Earth on Dec. 27 and was detected by at least 15 satellites and spacecraft between Earth and Saturn, swamping most of their detectors. Some of the best observations were recorded by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI), a NASA/University of California, Berkeley, satellite launched in 2002 to study gamma-ray emissions from solar flares.</p>