Related Clues:

• 9 Down overseer
• They plan long trips
• "The Eagle has landed" recipient
• Noted rocket launchers
• JPL overseer
• Galileo's gp
• Astronaut's org
• Apollo gp
• Magellan sponsor
• Big client of Lockheed Martin
• Voyager-launching org
• Initiator of a probe, maybe
• Curiosity producer
• Houston org
• Obsessive, say