On Sept. 7, 1995, NASA achieved a major milestone in human spaceflight when the space shuttle Endeavour launched from Pad 39A at the Kennedy Space Center in Florida on mission STS-69, marking the agency’s 100th successful crewed spaceflight, according to NASA records.
Mission Objectives and Payload Operations
During the 11-day mission, the five-member crew executed a complex series of scientific experiments, deployed and retrieved the Spartan 201 satellite, and launched the saucer-shaped Wake Shield Facility. According to NASA, this marked the first time two distinct payloads were deployed and retrieved during a single space shuttle mission. The Spartan 201-03 payload operated as an experiment designed to examine the sun’s outer atmosphere as it transitioned into solar wind, representing the third of four such flights flown on a NASA shuttle. Air Force.
Spacewalk Testing for Station Construction
Astronauts Jim Voss and Michael Gernhardt performed a nearly seven-hour spacewalk, logging six hours and 46 minutes working outside Endeavour. According to NASA, the spacewalkers tested new thermal upgrades for extravehicular activity suits alongside tools and techniques intended to help astronauts build the International Space Station.
Did you know?
Mission STS-69 was humorously designated by NASA as the flight of the “dog crew” or Dog Crew II, with every crew member adopting an official dog nickname: commander David Walker was Red Dog, pilot Kenneth Cockrell was Cujo, payload commander Jim Voss was Dog Face, Jim Newman was Pluto, and Michael Gernhardt was Under Dog.
Crew Roster and Significance
The flight demonstrated that crewed space operations had evolved into a routine capability rather than an occasional feat, according to historical agency overviews. The mission was commanded by David Walker, with Kenneth Cockrell serving as pilot. Jim Voss acted as payload commander, supported by mission specialists Jim Newman and Michael Gernhardt.

Frequently Asked Questions
When did mission STS-69 launch?
Mission STS-69 launched on Sept. 7, 1995, aboard the space shuttle Endeavour from Pad 39A at the Kennedy Space Center.
What made the STS-69 mission unique?
According to NASA, it was the 100th successful crewed spaceflight for the agency and the first time two different payloads—the Spartan 201 satellite and the Wake Shield Facility—were deployed and retrieved during the same mission.
Who were the crew members on Endeavour for STS-69?
The five-astronaut crew included David Walker as commander, Kenneth Cockrell as pilot, Jim Voss as payload commander, and Jim Newman and Michael Gernhardt as mission specialists.
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