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19 December 2013 12:36 pm ,
Vol. 342 ,
After 20 years of trying, researchers have finally convicted massive volcanic eruptions in Siberia as the culprit in...
Five federally funded optical and radio telescopes in the United States could be forced to shut down over the next 3...
A 2-year budget agreement pushes back the threat of sequestration but leaves scientists still wondering how much money...
After a decade away from physics, Robert Laughlin, a Nobel laureate at Stanford University in Palo Alto, California,...
Computer scientists and others have teamed up to persuade the 117 state parties to the Convention on Certain...
The swine flu pandemic of late 2009 had a peculiar aftereffect in parts of Europe: a spike in children being diagnosed...
- 19 December 2013 12:36 pm , Vol. 342 , #6165
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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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