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NASA’s Kepler Releases New Catalog- 2,321 Planet Candidates


Since science operations began in May 2009, the Kepler team has released two catalogs of transiting planet candidates. The first catalog (Borucki et al, 2010),released in June 2010, contains 312 candidates identified in the first 43 days of Kepler data. The second catalog (Borucki et al, 2011), released in February 2011, is a cumulative catalog containing 1,235 candidates identified in the first 13 months of data.

Today the team presents the third catalog containing 1,091 new planet candidates identified in the first 16 months of observation conducted May 2009 to September 2010. These are the same candidates that the team discussed at the Kepler Science Conference held at NASA Ames Research Center in December 2011.

Full Story: http://www.nasa.gov/mission_pages/kepler/news/kepler-newcatalog.html

NASA Lunar Scientists Shed Light on Moon’s Impact History

February 27, 2012 Leave a comment

A team of researchers from the NASA Lunar Science Institute (NLSI) at NASA Ames Research Center, Moffett Field, Calif., have discovered that debris that caused a “lunar cataclysm” on the moon 4 billion years ago struck it at much higher speeds than those that made the most ancient craters. The scientists found evidence supporting this scenario by examining the history of crater formation on the moon.

During Earth’s earliest days, our planet and others in the inner solar system, including the moon, experienced repeated impacts from debris that formed the building blocks of the planets. Over time, as material was swept up and incorporated into the inner planets, the rate of impacts decreased. Then, roughly 4 billion years ago, a second wave of impacts appears to have taken place, with lunar projectiles hitting at much higher speeds. This increase could reflect the origin of the debris, where main belt asteroids were dislodged and sent into the inner solar system by shifts in the orbits of the giant planets.

Full Story: http://www.nasa.gov/centers/ames/news/releases/2012/12-19AR.html