Title: Alexey Leonov
Content: His walk in space was originally to have taken place on the Voskhod 1 mission, but this was cancelled, and the historic event happened on the Voskhod 2 flight instead. He was outside the spacecraft for 12 minutes and nine seconds on 18 March 1965, connected to the craft by a tether. At the end of the spacewalk, Leonov's spacesuit had inflated in the vacuum of space to the point where he could not re-enter the airlock. He opened a valve to allow some of the suit's pressure to bleed off and was barely able to get back inside the

Title: Bruce McCandless II
Content: flight-tested rendezvous sensors and computer programs for the first time. This mission marked the first checkout of the MMU and Manipulator Foot Restraint (MFR). McCandless made the first untethered free flight on each of the two MMUs carried on board, thereby becoming the first person to make an untethered spacewalk. He described the experience, I was grossly over-trained. I was just anxious to get out there and fly. I felt very comfortable ... It got so cold my teeth were chattering and I was shivering, but that was a very minor thing. ... I’d been told of the quiet vacuum

Title: Pierre J. Thuot
Content: California, on March 4, 1990, after traveling 1.87 million miles. Thuot was a mission specialist on the crew of STS-49, the maiden voyage of the , which was launched from the Kennedy Space Center on May 7, 1992. During that mission, Thuot, along with astronaut Richard Hieb, performed three space walks which resulted in the capture and repair of the stranded Intelsat VI F3 communications satellite. The third space walk, which also included astronaut Thomas Akers, was the first ever three-person space walk. This 8 hour and 29 minute space walk, the longest in history, broke a twenty-year-old record that

Title: Sergei Korolev
Content: ejection system; but the crew was sent into orbit without space suits or a launch abort system. With the Americans planning a space walk with their Gemini program, the Soviets decided to trump them again by performing a space walk on the second Voskhod launch. After rapidly adding an airlock, the Voskhod 2 was launched on 18 March 1965, and Alexei Leonov performed the world's first space walk. The flight very nearly ended in disaster, as Leonov was just barely able to re-enter through the airlock, and plans for further Voskhod missions were shelved. In the meantime the change of

Title: STS-41-B
Content: On the fourth day of the mission, astronauts McCandless and Stewart performed the first untethered spacewalk, operating the Manned Maneuvering Unit (MMU) for the first time. McCandless ventured out from the orbiter, while Stewart tested the "work station" foot restraint at the end of the Remote Manipulator System. On the seventh day of the mission, both astronauts performed another EVA to practice capture procedures for the Solar Maximum Mission satellite retrieval and repair operation, which was planned for the next mission, STS-41-C. STS-41-B also achieved the reflight of the West German-sponsored SPAS-1 pallet/satellite, which had originally flown on STS-7. This

Question: The first untethered space walk took place from which space craft?
Answer: Challenger