Scientists have found two planets that orbit the Earth-Measuring a star outside our solar system, an encouraging sign for the prospects of finding life elsewhere.
The findings show that such planets exist and can be detected from the ship Kepler, said Francois Fressin of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts.
Are the smallest planets found orbiting a star so far that looks like our sun.
Scientists looking for planets of Earth-like houses Measured potential for extraterrestrial life, said Fressin, reporting the new findings in a paper published online Tuesday by the journal Nature.
A planet's diameter is only 3 percent larger than Earth, while the diameter of the other covers nine-tenth of this Earth. Appear to be rocky, like our planet.
But I'm too hot to hold life as we know, with the calculated temperatures of about 1,400 degrees and 800 degrees Fahrenheit, he said.
Any life found on another plant could not be intelligent; could be bacteria or shape or form is completely unknown.
Since it was launched in 2009, NASA planet-hunting Kepler telescope has found evidence of dozens of possible planets in Earth-Measure.
But the report is the first Fressin to provide confirmation, said Chief Alan Carnegie Institution for Science in Washington.
He is a member of the Kepler science team but not an author of the paper.
Researchers have ruled out a possible alternative explanation for the signals that indicated the beginning of the planets orbiting the star Kepler-20.
The star is 950 light-year from Earth in the indication of the constellation Lyra.
The planets, Kepler and Kepler-20f 20th called, are part of a five-planet system around the star, and their position that the current challenge of how to understand the form of planets, scientists said.
In your solar system, the small rocky planets are closest to the sun, while the gas giants are on the periphery. But the five-planet system has no such dividing line, the planets large and small as an alternate moves away from the star. This is "crazy," and unexplained by the current understand how planets form around stars, said study co-author and Harvard scientist David Charbonneau.
Before this month, scientists said they found a planet around another star away with a life-friendly surface temperature of about 72 degrees Fahrenheit.
But it was too large to suggest life on its surface.
At 2.4 times the size of Earth could be more like the gas-and liquid-Neptune with only a center and an especially rocky ocean, scientists said one.