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6 March 2014 1:04 pm ,
Vol. 343 ,
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...
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...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: Jupiter Impact Left No Mark
16 June 2010 1:58 pm
When amateur astronomers spotted a brief white blaze near Jupiter's midsection on 3 June, scientists thought the planet had been hit by a large asteroid or comet. But when they began looking for the telltale dark cloud of debris, they didn't find it. That means, Hubble Space Telescope scientists announced today, that the object that struck Jupiter 2 weeks ago must have been a much smaller asteroid or comet than the impactor that scarred the planet in 2009—and the string of cometary fragments that left multiple pockmarks in Jupiter's cloud tops in 1994. Indeed, the object was so small that it vaporized completely in Jupiter's atmosphere, instead of surviving long enough to blast out a cloud-forming plume of dust and debris.