LIVE NOW: Social Q&A about my #MarsLanding tomorrow. Watch online: http://go.nasa.gov/InSightLanding pic.twitter.com/vGkguvqF9w
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#askNASA Chuck Marble, SARA SpaceNet, for Jim Green: "Congrats on becoming NASA's Chief Scientist in May! During your time as director of the Planetary Science Division, you managed many historic missions. Years from now, what do you hope InSight will be best remembered for?
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