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17 April 2014 12:48 pm ,
Vol. 344 ,
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...
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,...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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ScienceShot: Not-So-Tiny Bubbles in the Carina Nebula
5 June 2012 3:44 pm
To the naked eye, the Carina Nebula, which lies some 7500 light-years from Earth, is just a diffuse blob. But far-infrared wavelengths reveal a more detailed picture. New observations, gathered by sensors aboard the European Space Agency's (ESA's) Herschel Space Observatory, show giant bubbles of gas sculpted by intense stellar winds amid a chaotic web of dust clouds (image). The total amount of gas and dust in this false-color compilation of three far-infrared wavelengths equals about 650,000 times the mass of our sun, according to ESA scientists. The clouds of gas and dust rendered visible in this image are extremely cold, with temperatures ranging from 10 to 30 kelvin (about -263° to -243°C). Including warmer gas and dust not apparent at these wavelengths, the total mass of this stellar nursery may be as high as 900,000 suns. The nebula's central region (bottom) is home to some of the most massive and luminous stars in our galaxy, including η Carinae, a two-star system that by itself weighs more than 100 times our sun.
See more ScienceShots.