Related Clues:

• Group whose name is often mistakenly thought to be an acronym
• High-IQ crowd
• Bright bloc
• Bright group
• Bright set
• Viking launcher
• Astronaut's acronym
• Houston gp.
• Org. that has many probes
• Project Mercury gp.
• Pioneer org.
• Shuttle acronym
• High-IQ society
• 'Stupid,' in Spanish(!)
• Apollo org.