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17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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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.