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state

Mission

Kind: Crewed lunar landing (J)

State: successful

Place: Moon

Operator: NASA

Date

Start:

Duration: 12 days, 7 hours, 11 minutes, 53 seconds

Mission Ending

"Life's like a movie, write your own ending. Keep believing, keep pretending." - Jim Henson

Rocket

Rocket: Saturn V AS-510

Kind: NASA

Manufacturer: CSM: North American RockwellLM: Grumman

Mass: 48,599 kilograms (107,142 lb)

Launch Site: Kennedy LC-39A

Flyby

"Requesting permission for flyby." Maverick - Top Gun

Orbit

Reference System: Selenocentric

1º Orbit: Lunar

Lander

Place: Lunar

Region: 26°07′56″N 3°38′02″E / 26.1322°N 3.6339°E / 26.1322, 3.6339

Date: July 30, 1971, 22:16:29 UTC

Component: Lunar module



Apollo 15 was the ninth crewed mission in the United States' Apollo program and the fourth to land on the Moon. It was the first J mission, with a longer stay on the Moon and a greater focus on science than earlier landings. Apollo 15 had the first use of the Lunar Roving Vehicle. The 1971 mission began on July 26 and ended on August 7, with the lunar surface exploration taking place between July 30 and August 2. Commander David Scott and Lunar Module Pilot James Irwin landed near Hadley Rille and explored the local area using the rover, allowing them to travel further from the lunar module than had been possible on previous missions. They spent 18​1⁄2 hours on the Moon's surface on extravehicular activity (EVA), and collected 170 pounds (77 kg) of surface material. At the same time, Command Module Pilot Alfred Worden orbited the Moon, operating the sensors in the SIM bay of the service module. This suite of instruments collected data on the Moon and its environment using a panoramic camera, a gamma-ray spectrometer, a mapping camera, a laser altimeter, a mass spectrometer, and a lunar subsatellite deployed at the end of the moonwalks. The lunar module returned safely to the command module and, at the end of Apollo 15's 74th lunar orbit the engine was fired for the journey home. During the return trip Worden performed the first spacewalk in deep space. The Apollo 15 mission splashed down safely on August 7 despite the loss of one of its three parachutes. The mission accomplished its goals but was marred by negative publicity the following year when it emerged that the crew had carried unauthorized postal covers to the lunar surface, some of which were sold by a West German stamp dealer. The members of the crew were reprimanded for poor judgment, and did not fly in space again. Apollo 15 is also remembered for the discovery of the Genesis Rock, and for Scott's use of a hammer and a feather to validate Galileo's theory that absent air resistance, objects drop at the same rate due to gravity.

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