What's Hot This Week Q&A With Malcolm Hartley, Discoverer of Comet Hartley 2 By Mike Wall On Nov. 4, NASA's Deep Impact spacecraft will make an up-close visit to the small Comet Hartley 2, marking just the fifth time ever that a comet has been imaged from nearby.     Looking Back: A Decade of Astronauts on the International Space Station By Clara Moskowitz Ten years ago today, humans arrived at the International Space Station - and the orbiting laboratory has not been empty since.     Sponsored by: Is the International Space Station Worth $100 Billion? INFOGRAPHIC: NASA's Space Shuttle - From Top to Bottom Jupiter's Moons to Perform Weekend Show for Skywatchers Image Gallery: Building the International Space Station Deep Impact Spacecraft Closing in on Comet Hartley 2

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