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STS-61-A (also known as Spacelab D-1) was the 22nd mission of NASA's Space Shuttle program. It was a scientific Spacelab mission, funded and directed by West Germany – hence the non-NASA designation of D-1 (for Deutschland-1). STS-61-A was the ninth and last successful flight of Space Shuttle Challenger before the disaster.
The codes were adopted from STS-41-B through STS-51-L (although the highest code used was actually STS-61-C), and the sequential numbers were used internally at NASA on all processing paperwork. After the Challenger disaster , NASA returned to using a sequential numbering system, with the number counting from the beginning of the STS program.
With its very heavy workload, the STS-61 mission was one of the most complex in the Shuttle's history. STS-61 lasted almost 11 days, and crew members made five spacewalks (extravehicular activities (EVAs)), an all-time record; even the re-positioning of Intelsat VI on STS-49 in May 1992 required only four. The flight plan allowed for two ...
STS-144 Columbia: A mission to retrieve the Hubble Space Telescope and return it to Earth, for possible display in the National Air and Space Museum in Washington, D.C. [citation needed] NASA later flew the STS-125 mission to the telescope, carrying a target assembly to allow for a safe de-orbit and atmospheric breakup over the Pacific Ocean.
After completing 111 orbits of the Earth, STS-61-A landed at Edwards Air Force Base, California, on November 6, 1985. STS-61-A was the final successful flight of Challenger, as it was destroyed during the launch of its next mission, STS-51-L. With the completion of this flight, Hartsfield had logged 483 hours in space. [4]
One array was discarded into space, and one array was furled and stowed for return to earth. [14] 7 December 03:35 6 hours 47 minutes 10:22 STS-61 Endeavour: Story Musgrave Jeffrey A. Hoffman HST servicing: Replaced the WFPC with WFPC 2 and two magnetometers. [14] 8 December 03:13 7 hours 21 minutes 10:03 STS-61 Endeavour: Kathryn C. Thornton ...
In 2017, Cenker's STS-61C crewmate former US Senator Bill Nelson spoke at a session of the US House of Representatives. In an address, titled "Mission to Mars and Space Shuttle Flight 30th Anniversary", he read into the Congressional Record the details of the mission of STS-61C, as well as the names and function of each crew member including ...
Ross flew as a mission specialist on STS 61-B (1985), STS-27 (1988) and STS-37 (1991), was the Payload Commander on STS-55/Spacelab-D2 (1993), and again served as a mission specialist on the second Space Shuttle to rendezvous and dock with the Russian Space Station Mir, STS-74 (1995), the first International Space Station assembly mission, STS ...