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KENNEDY SPACE CENTER, FLA. - Workers in the Vertical Processing Facility check the position of the Hubble Space Telescope's replacement Reaction Wheel Actuator on the Large Orbital Protective Enclosure (LOPE), which is contained in the Multi-Use Lightweight Equipment (MULE) for flight. Part of Hubble's Pointing Control System, the actuators receiving information from sensors and physically adjust Hubble's position and orientation so that Hubble can view the required celestial bodies. The reaction wheels work by rotating a large flywheel up to 3000 rpm or braking it to exchange momentum with the spacecraft which will make Hubble turn. The RWA is part of the payload on mission STS-109, the Hubble Servicing Mission, scheduled to launch Feb. 28, 2002 KSC-02pd0097
Jet Propulsion Laboratory (JPL) workers prepare the installation cart (atop the platform) for removal of a radioisotope thermoelectric generator (RTG) from the adjacent Cassini spacecraft. This is the second of three RTGs being removed from Cassini after undergoing mechanical and electrical verification tests in the Payload Hazardous Servicing Facility. The third RTG to be removed is in background at left. The three RTGs will then be temporarily stored before being re-installed for flight. The RTGs will provide electrical power to Cassini on its 6.7-year trip to the Saturnian system and during its four-year mission at Saturn. RTGs use heat from the natural decay of plutonium to generate electric power. The generators enable spacecraft to operate far from the Sun where solar power systems are not feasible. The Cassini mission is scheduled for an Oct. 6 launch aboard a Titan IVB/Centaur expendable launch vehicle. Cassini is built and managed for NASA by JPL KSC-97pc1065
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Saturn V - Saturn Apollo Program
Summary
The third stage (S-IVB) of the Saturn V launch vehicle for the Apollo 11 lunar landing mission is hoisted in the vehicle assembly building at the NASA Kennedy Space Center (KSC) for mating with the second stage (S-II). The vehicle, designated as AS-506, projected the first lunar landing mission, Apollo 11, on a trajectory for the Moon. The Apollo 11 mission launched from KSC in Florida via the Marshall Space Flight Center (MSFC) developed Saturn V launch vehicle on July 16, 1969 and safely returned to Earth on July 24, 1969. Astronauts onboard included Neil A. Armstrong, commander; Michael Collins, Command Module (CM) pilot; and Edwin E. Aldrin, Jr., Lunar Module (LM) pilot. The CM, “Columbia”, piloted by Collins, remained in a parking orbit around the Moon while the LM, “Eagle’’, carrying astronauts Armstrong and Aldrin, landed on the Moon. On July 20, 1969, Armstrong was the first human to ever stand on the lunar surface, followed by Aldrin. During 2½ hours of surface exploration, the crew collected 47 pounds of lunar surface material for analysis back on Earth. With the success of Apollo 11, the national objective to land men on the Moon and return them safely to Earth had been accomplished.
Apollo 11 was the first spaceflight that landed humans on the Moon. Americans Neil Armstrong and Buzz Aldrin landed on July 20, 1969, at 20:18 UTC. Armstrong became the first to step onto the lunar surface six hours later on July 21 at 02:56 UTC; Aldrin joined him about 20 minutes later. They spent about two and a quarter hours together outside the spacecraft and collected 47.5 pounds (21.5 kg) of lunar material for return to Earth. The third member of the mission, Michael Collins, piloted the command spacecraft alone in lunar orbit until Armstrong and Aldrin returned to it just under a day later for the trip back to Earth. https://en.wikipedia.org/wiki/Apollo_11
The mission plan of Apollo 11 was to land two men on the lunar surface and return them safely to Earth. The spacecraft carried a crew of three: Mission Commander Neil Armstrong, Command Module Pilot Michael Collins, and Lunar Module Pilot Edwin E. Aldrin Jr., was launched by a Saturn V from Cape Kennedy on July 16, 1969, and after three days until they entered lunar orbit. Collins was awaiting on Lunar orbit while the Eagle Lunar Module with Armstrong and Aldrin and has landed in Moon's Mare Tranquillitatis at 3:17 p.m. EST on July 20, 1969. Immediately after landing on the Moon, Armstrong and Aldrin prepared the LM for liftoff as a contingency measure. Following the meal, the astronauts began preparations for the descent to the lunar surface. Armstrong emerged from the spacecraft first. While descending, he released the Modularized Equipment Stowage Assembly on which the surface television camera was stowed, and the camera recorded humankind's first step on the Moon. A sample of lunar surface material was collected and stowed to assure that, if a contingency required an early end to the planned surface activities, samples of lunar surface material would be returned to Earth. Astronaut Aldrin subsequently descended to the lunar surface. The astronauts collected lunar samples, deployed several experiments, and made photographs of the lunar surface. Two and a quarter hours later, the astronauts reentered the Lunar Module, after which the astronauts slept. The ascent from the lunar surface began 21 hours and 36 minutes after the lunar landing. In about four days, the Command Module entered Earth atmosphere and landed in the Pacific Ocean.
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