Latest Reuven Ramaty High Energy Solar Spectroscopic Imager Stories
The RHESSI (Ramaty High Energy Solar Spectroscopic Imager) satellite focuses on the highest energy x-rays and gamma-rays produced by the sun, helping to observe solar flares of all shapes and sizes.
Ten years since its launch, RHESSI has observed more than 40,000 X-ray flares, helped craft and refine a model of how solar eruptions form, and fueled additional serendipitous science papers on such things as the shape of the sun and thunder-storm-produced gamma ray flashes.
When opportunity knocked, NASA heliophysicist Doug Rowland answered.
Instruments scanning outer space for cataclysmic explosions called gamma-ray bursts are detecting intense flashes of gamma-ray energy right here in the friendly skies of Earth.
In 1959, only two years after the Soviet Union launched Sputnik and ignited the space race, the University of California, Berkeley, created a laboratory devoted to space science that has grown to be one of the most active academic space research labs in the country.
Scientists using NASAâ€™s RHESSI spacecraft have measured the roundness of the sun with unprecedented precision. They find that it is not a perfect sphere.
A plethora of latest results from the Hinode solar observatory contains a wealth of new discoveries. This includes the discovery of a source of the slow solar wind and the observation of a superhot micro flare.
The most intense burst of solar radiation in five decades accompanied a large solar flare on January 20. It shook space weather theory and highlighted the need for new forecasting techniques, according to several presentations at the American Geophysical Union (AGU) meeting this week in New Orleans.
A great mystery was set in motion a few years ago when a spacecraft designed to measure gamma-ray bursts -- the most powerful explosions in the Universe -- found that Earth was actually emitting some flashes of its own.
- The act of sweetening by admixture of some saccharine substance.
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