Astronomy: March 2011 Archives

The Occurrence Rate of Earth Analog Planets Orbiting Sunlike Stars, NASA JPL via

"Kepler is a space telescope that searches Sun-like stars for planets. Its major goal is to determine nEarth, the fraction of Sunlike stars that have planets like Earth. When a planet 'transits' or moves in front of a star, Kepler can measure the concomitant dimming of the starlight. From analysis of the first four months of those measurements for over 150,000 stars, Kepler's science team has determined sizes, surface temperatures, orbit sizes and periods for over a thousand new planet candidates. Here, we show that 1.4% to 2.7% of stars like the Sun are expected to have Earth analog planets, based on the Kepler data release of Feb 2011."

NASA OIG: NASA's Use of Recovery Act Funding for the James Webb Space Telescope Project

"Following multiple schedule delays and substantial cost growth, in 2009 the JWST Project received $75 million in Recovery Act funding intended to sustain the Project's workforce at a consistent level and maintain the baseline schedule for key development activities. We found that in using these funds, the JWST Project adequately addressed the requirements of the Recovery Act and related OMB guidance and delivered measureable outcomes consistent with Agency program and project plans and the goals of the Act. Specifically, we found that the $75 million in Recovery Act funds enabled 454 jobs to be retained on the JWST Project in the fourth quarter of FY 2009 and 149 jobs in the first quarter of FY 2010."



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This page is an archive of entries in the Astronomy category from March 2011.

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