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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...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: The Source of Saturn's Radio
5 August 2010 12:01 pm
Welcome to KSAT, the radio station broadcasting from the poles of Saturn. For years, scientists have been puzzled by the pulsing intensity of radio emissions from the ringed planet. Puzzling, because the scientists couldn't key the pulses to any known phenomenon. The 11-hour intervals approximated but didn't match Saturn's rotation rate, so the planet's magnetic field couldn't be the source. Nor could scientists find any connection between the radio-signal intensity and variations in the solar wind. Now researchers examining 5 years of images from the Hubble Space Telescope and the Cassini spacecraft, which orbits Saturn and its moons, say they've found a clue. In an upcoming issue of Geophysical Research Letters, a team reports that the variations in radio signal coincide with the intensity of the planet's auroras. That revelation doesn't solve the mystery, however. So scientists have started looking for the cause of the auroral variations. One prime candidate: particle emissions from Saturn's moon Enceladus.
See more ScienceShots.