Kepler Discovers First Earth-Sized Planets Outside Solar System
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Uploaded by nasaames on Dec 20, 2011
NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system. The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in the so-called habitable zone where liquid water could exist on a planet's surface, but they are the smallest exoplanets ever confirmed around a star like our sun.
Kepler-20e is slightly smaller than Venus, measuring 0.87 times the radius of Earth. Kepler-20f is slightly larger than Earth, measuring 1.03 times its radius. Both planets reside in a five-planet system called Kepler-20, approximately 1,000 light-years away in the constellation Lyra.
Kepler-20e orbits its parent star every 6.1 days and Kepler-20f every 19.6 days. These short orbital periods mean very hot, inhospitable worlds. Kepler-20f, at 800 degrees Fahrenheit, is similar to an average day on the planet Mercury. The surface temperature of Kepler-20e, at more than 1,400 degrees Fahrenheit, would melt glass.
For more information about the Kepler Mission, please visit http://www.nasa.gov/kepler
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your creepy... "okay"
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@jefroxs13 LOL! If we have the equipment to go there, I would love to go..
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we already polluted earth,,then ,,
KEPLERS NEXT!!!wahahaha
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@claton95 Of course it is. And I think that is one of the reasons why NASA should try to communicate in Metric. I think that, as an organization of science, one of its responsibilities should be to help educating the American public. That would be especially beneficial to the American students who have to deal with the irrational Imperial System. And we, international fans of NASA, would also be very happy to see it talking in a universal and more scientific language :-)
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@237Michael yet NASA is an American space agency. Is it not?
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so what if they really find it? human will never get there anyway! don't tell me about wormhole !
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America is going to invade it for its resources.
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@onetenkwa same thoughts here.
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@LTyson42 Give me 2 years and I will answer that.
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Hey, Nasa Ames! You are talking to the whole Earth here. And out of the U.S.A. we use Celsius, not Fahrenheit. Centigrades, please!
237Michael 2 months ago 26
Great planets! I would be 700 to 2200 years old, and burnt to a crisp.
MidNightRider2001 2 months ago 11