Tuesday, July 24, 2012
More evidence of the existence of super-Earth Gliese 581g
In 2010, the astronomer at the University of California at Santa Cruz (UCSC) have reported discovering a planet could potentially life around, called Gliese 581g star Gliese 581. Unfortunately, studies of the HARPS team at the Geneva Observatory data did not confirm its existence. Therefore, people have raised a big question mark about the existence of this planet. However, after nearly two years of observation and additional measurements at USCS scientists added the solid evidence to confirm their previous results.Using new analytical methods, and combinations of HARPS data observatories and W. M. Keck, scientists at UCSC, said the uncertainty in the simulation and calculation data processing False Alarm Probabilit than the actual value of their latest study was less than 4%, an ideal value of this area. Newly published works Astronomical Notes also confirmed all the planets orbiting the star Gliese 581 in the circular orbits rather than elliptical orbits like celestial bodies in our solar system. Back to information related to Gliese 581g, UCSC researchers said they identified the minimum mass planet Earth was 2.2 times, while its radius is not smaller than 1, 5 Earth radii, or about 10,000 km. It is known that the radius of the orbit of Gliese 581g to about 0.13 astronomical units (about 19,447,740 km) so that it lies entirely in the living areas surrounding a star. It is very near the central star than the distance Earth-Sun, Gliese 581g still get a light density with a density equivalent to light that the sun shining on our planet by the star around, but it is a red dwarf with nuclear power has dried up. If ranked probability scale-like habitable places in the universe from 0 to 1 (1 for the Earth), Gliese 581 will receive a 0.92 higher score Gliese 677Cc candidates have been found in last year, and is capable of celestial habitable highest ever found With information from UCSC, so far, outside of Earth (of course then) we saw a total of 6 planets viability of life in the universe, including:Gliese 581g: 0.92Gliese 677C c: 0.85Kepler 22-b: 0.81HD 85512 b: 0.77Glipse 851d: 0.72Mars: 0.66Source: ArXiv.org
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