Wednesday, April 25, 2007

A habitable Earth-like planet


"... The planet, which is about 50 percent larger than Earth, circles a star in the constellation Libra known as Gliese 581, about 20.5 light-years away.
The new planet, which is the smallest planet beyond our solar system found to date, circles its star 14 times closer than Earth orbits the sun. But because Gliese 581 is smaller and colder than our sun, the system's so-called habitability zone, where liquid water and thus life is possible, is closer to the mother star than in our solar system.
Astronomers estimate the mean temperature of the newly discovered planet to be between 0 degrees and 104 degrees Fahrenheit.

"... Astronomers previously have found a Neptune-sized world circling Gliese 581, as well as strong evidence for a third planet about eight times the mass of Earth. ..."

And check the video: here.

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