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What's Hot This Week How To Land On A Comet by Steve Spaleta Europe's Rosetta mission ultimate goal is to shadow Comet 67P/Churyumov-Gerasimenko for 2 years and deploy its lander on to the icy nucleus. The science it will send back is set to deliver the most comprehensive look at these ancient space rocks. Hidden Secrets of Majestic Nebula Revealed in New Photo SPACE.com Staff The Carina nebula is home to several of the brightest and most massive known stars. Sponsored by: NASA Chief Joins President Obama at White House Science Fair NASA to Pick 2 Private Space Taxi Designs for Astronaut Flights