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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: One Planet, Four Suns
15 October 2012 11:57 am
Ordinary people have spotted an extraordinary world: a giant planet larger than Neptune and smaller than Saturn that inhabits a star system with four suns. The citizen scientists discovered the planet by examining data from NASA's Kepler spacecraft. Professional astronomers then confirmed the find, which they submitted to The Astrophysical Journal. Named PH1, the planet goes around two of the four stars, shown close-up here: One is a yellow-white F-type star that is slightly warmer and more luminous than our sun; the other, at the 11 o'clock position, is a red dwarf, cooler and dimmer than the sun. The two stars orbit each other every 20 days. The planet is the round black dot at the 4 o'clock position. (The black splotches elsewhere are starspots.) The planet goes around the stellar duo every 138 days—slower than Mercury (88 days), faster than Venus (225 days). At the 10:30 position, a second stellar binary appears, about 30 times farther away than Pluto is from the sun. At certain times of the planet's year, those distant suns shine during the day; but at other times, they light up its night.
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