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5 December 2013 11:26 am ,
Vol. 342 ,
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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Video: Hot Plasma Rains Down on the Sun
28 April 2010 2:09 pm
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NASA's new Solar Dynamics Observatory has been operating for only a week, and already its keen-eyed cameras have captured phenomena affecting our local star in unprecedented detail. First, the spacecraft, which operates in geosynchronous Earth orbit, produced the best map yet of solar surface temperatures—with a psychedelic image to boot. Now, scientists watching examples of what they call plasma rain—actually billions of tons of debris from solar eruptions falling back to the surface—think they have solved a longstanding mystery. Much of the debris was expected to rain back down, recaptured by the sun's gravity. But as this video shows, it's falling slower than expected. The reason, as revealed by the SDO images, is that the debris is being buoyed by a cushion of hot gas, something that had remained undetected in previous observations. NASA scientists say they're already wondering what next week will bring.