Astrobiology: December 2011 Archives

Happy Holidays From Antarctica

"Astrobiologist Dale Andersen from the SETI Institute is currently on his way back to the U.s. via a stop over in Capetown, South Africa. Dale and his team spent a month or so at Lake Untersee in Antarctica. This photo was taken shortly before Christmas. Dale is shown holding a patch for the Challenger Center for Space Science Education."

NASA's Kepler Confirms Its First Planet in Habitable Zone of Sun-Like Star

"NASA's Kepler mission has confirmed its first planet in the "habitable zone," the region where liquid water could exist on a planet's surface. Kepler also has discovered more than 1,000 new planet candidates, nearly doubling its previously known count. Ten of these candidates are near-Earth-size and orbit in the habitable zone of their host star. Candidates require follow-up observations to verify they are actual planets."

Kepler-22b: A 2.4 Earth-radius Planet in the Habitable Zone of a Sun-like Star

"A search of the time-series photometry from NASA's Kepler spacecraft reveals a transiting planet candidate orbiting the 11th magnitude G5 dwarf KIC 10593626 with a period of 290 days. The characteristics of the host star are well constrained by high-resolution spectroscopy combined with an asteroseismic analysis of the Kepler photometry, leading to an estimated mass and radius of 0.970 +/- 0.060 MSun and 0.979 +/- 0.020 RSun. The depth of 492 +/- 10ppm for the three observed transits yields a radius of 2.38 +/- 0.13 REarth for the planet."



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This page is an archive of entries in the Astrobiology category from December 2011.

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