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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: Built by Black Holes?
2 February 2012 4:10 pm
Scientists have long speculated that supermassive black holes, which have large gravitational fields and are suspected to reside in the centers of many large galaxies, disrupt nearby clouds of dust and gas, thereby hindering the formation of new stars. But new images of the galaxy Centaurus A (left) taken with cameras onboard the Hubble Space Telescope suggest that black holes can play a constructive role as well, researchers report in Monthly Notices of the Royal Astronomical Society. A close-up of a 3000-light-year-long filament of ionized gas in the galaxy (green smudges at right, and boxed area at left) reveals a cluster of young stars (bright, blue-white dots at bottom) at the end of the filament nearest the galaxy's central black hole. The researchers suggest that those fledgling stars, estimated to be less than 10 million years old, formed when a jet of material driven from the black hole slammed into the gas cloud, compressing and heating it to the point where the stars ignited.
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