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Top 20 Directory:
Top : Science : Technology : Space : NASA : Discovery_Program
  		• Deep Impact@
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  		• Lunar Prospector@
  		• Mars Pathfinder@
  		• MESSENGER@
  		• Near Earth Asteroid Rendezvous - NEAR@
  		• Stardust@
    Sites:
  		• Discovery Program: An ongoing project, which offers the scientific community the opportunity to assemble a team and design investigations that complement NASA's larger planetary science explorations. The goal is to launch many smaller missions with fast development times.
  		• NSSDC Master Catalog: CONTOUR: The Comet Nucleus Tour spacecraft was presumed lost during its mission. Includes an overview of the mission and full mishap board investigation report.
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