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Scientists Discover New Super Earth Planet With Optimal Conditions In Cosmos
Astronomers have uncovered evidence for a super Earth size planet in the habitable zone of a star 42 light-years away in the southern hemisphere constellation Pictor. If the data truly signal a planet, the object could host liquid water on its surface, the team estimates. Liquid water is seen as a key ingredient for organic life. So far, astronomers have detected more than 840 planets orbiting other stars. A handful of those are super Earths that fall within their stars #39; habitable zones. But only two -- including this newly announced planet candidate -- are far enough away from their stars to allow for a day-night cycle. The others orbit so close to their stars that they #39;ve become tidally locked, presenting the same face to their stars as they swing about their orbits. A day-night cycle on the new planet "improves its chances of hosting an Earth-like climate," the team wrote in the formal report of their discovery, which has been accepted for publication in the journal Astronomy and Astrophysics. The host star, tagged as HD 40307, has about 77 percent of the sun #39;s mass and is a sun-like 4.5 billion years old. Researchers previously had detected three super Earths orbiting the star. The potentially habitable planet is one of three additional planet-candidates the team is reporting around HD 40307. It #39;s a uniquely crafted system. Five of the six planets orbit within a scant 23 million miles of the star. HD 40307g, the outermost of the six, orbits another 33 million miles ...From:above scienceViews:101 7ratingsTime:01:45More inPeople Blogs

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Scientists Discover New Super Earth Planet With Optimal Conditions In Cosmos - Video