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6 March 2014 1:04 pm ,
Vol. 343 ,
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...
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...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: The Dusty Swirls of the Whirlpool Galaxy
13 January 2011 3:45 pm
SEATTLE, WASHINGTON—Like dancing fire dragons, two dusty spiral arms swirl around the core of a galaxy in this infrared Hubble picture of M51, the Whirlpool galaxy. The image, presented here today at the 217th meeting of the American Astronomical Society, was obtained by subtracting known starlight from a photograph taken by Hubble's Near Infrared Camera and Multi-Object Spectrometer (NICMOS), leaving just the infrared glow of warm dust. The countless small, bright specks in the photograph are tiny clumps of newborn stars that have never been seen before because their optical light is obscured by the surrounding dust. Surprisingly, no larger, discrete dust clouds were found in the Whirlpool, which is 37 million light-years from Earth. Such larger clouds were expected on the basis of optical photographs. Images like this should help astronomers untangle how and where gas and dust in galaxies collapse into new stars.
See more ScienceShots.