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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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ScienceShot: Tracking Space Weather
18 August 2011 4:54 pm
Using a newly developed technique that can separate the dim light of a solar flare from the blaze of stars in the background, researchers have, for the first time, tracked a massive solar flare from the sun all the way to Earth, they reported at a NASA press briefing today. That coronal mass ejection—or CME, a type of solar flare that hurls prodigious amounts of charged particles into space—erupted from the sun in December 2008, and only now have scientists developed a way to spot material in a flare throughout its lifetime. Solar flares are bright as they erupt from the sun, but after the first few hours they diffuse to near invisibility. By the time a typical CME crosses the orbit of Venus, its material glows only 1 billionth as brightly as the full moon, yet it's still strong enough to damage power grids and satellites. The new analytical tool, which dissects data gathered by five cameras on a probe orbiting the sun far from Earth, provides scientists with the ability to track CMEs from the time they burst from the solar atmosphere (top) to the point at which they near Earth (bottom). That capability will allow researchers to better observe the evolving size, shape, speed, and magnetic field of massive flares and therefore better predict when the CME will slam Earth and what its effects might be.
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