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5 December 2013 11:26 am ,
Vol. 342 ,
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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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.
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