Gemini 10 (officially Gemini X) was a 1966 crewed spaceflight in NASA's Gemini program. It was the 8th crewed Gemini flight, the 16th crewed American flight, and the 24th spaceflight of all time (includes X-15 flights over ). During the mission, flown by command pilot John Young and pilot Michael Collins, Collins became the first person to perform two extravehicular activities.
Gemini 10
72 words updated Jun 17, 2026, 9:04 PM
