Join NASA scientists for a look at the new Lunar Reconnaissance Orbiter, or LRO. Find out about the instruments that will make a comprehensive map of the moon and search for safe landing sites by collecting unprecedented amounts of data.

[Archived 2014 - Not all missions make it from design to launch. These archived videos describe missions that that would have taken humans back to the moon and unmanned aerial vehicles to Mars. While the actual missions were aborted, the technology and science behind the missions pushed innovation to new levels.]

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