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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: Most Stars May Be Born as Twins
21 May 2010 3:54 pm
Break out the cigars! Astronomers using the Spitzer Space Telescope have caught the first evidence that many—possibly most—binary stars hatch from the same cloud of dust, just as identical twins on Earth split from a single embryo. It turns out that some protostellar clouds, as they are called, often form irregular, elongated shapes instead of remaining spherical. Once that happens, it's much easier for the dust in the cloud to condense into two stars instead of one (six binary star systems in the making are shown above). Astronomers using Spitzer, whose infrared sensitivity can pierce the veil of dust and probe the starmaking process inside, found that 17 of the 20 protostellar clouds they peered into were considerably elongated. In addition, the other three clouds weren't quite spherical, either. And that may explain why most star systems in the Milky Way are binaries.
See more ScienceShots.