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Another Gliese planet could be in habitable zone

Orbit of Gliese 581's planets compared to our solar system (credit: NASA)
Orbit of Gliese 581g compared to our solar system (credit: NASA)
Earlier this year, the newly discovered planet Gliese 581g was announced to be a good candidate for extraterrestrial life. Now, researchers are saying the same thing about another planet in the Gliese 581 solar system.

According to new atmospheric-modeling research, the planet Gliese 581d, like its neighbor Gliese 581g, may lie in the star’s “habitable zone”—the region where a planet’s temperature can sustain liquid water on its surface. The new research supports similar studies from earlier this year.

Research suggests Gliese 581d is rocky like Earth, and probably seven to eight times the size of Earth.

Jason McClellan

Jason McClellan is a UFO journalist and the producer/co-host of the web series Spacing Out! He is also the web content manager and staff writer for OpenMinds.tv, and a co-organizer and technical producer of the International UFO Congress. As a founding member of Open Minds, Jason served as a writer and editor for the now defunct Open Minds magazine. He has appeared on Syfy, NatGeo, and, most recently, he co-starred on H2's Hangar 1: The UFO Files. ------ Follow Jason on Twitter @acecentric and subscribe to Jason's updates on Facebook.

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