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Apollo Program

The Apollo program was NASA’s human spaceflight effort to send astronauts to the Moon and return them safely to Earth. Announced as a national goal in 1961, it combined crewed flight tests, lunar-orbit missions and six crewed Moon landings between 1969 and 1972. Its rockets and spacecraft also enabled scientific exploration; Apollo astronauts returned hundreds of kilograms of lunar material that researchers continue to study.

Last updated
21 October 2026
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This article was researched and drafted with AI assistance and checked by an automated review pass. It is not guaranteed to be accurate — verify important facts against the references below.

Origins and goals

On May 25, 1961, President John F. Kennedy asked Congress to commit the United States to landing a person on the Moon and returning them safely before the decade ended. The goal was announced amid competition with the Soviet Union in space. NASA’s stated aims for Apollo extended beyond the landing itself: they included developing space technology, carrying out scientific exploration of the Moon, establishing U.S. preeminence in space and developing the ability for people to work in the lunar environment. Apollo became a large national engineering and research effort involving NASA, contractors, universities and government facilities.

Launch vehicles and spacecraft

Apollo lunar missions relied on the Saturn V launch vehicle. The Saturn IB was used for Earth-orbit flights. The Apollo spacecraft comprised a command module, where the crew lived and controlled the flight; a service module carrying propulsion and support systems; and a lunar module designed to carry two astronauts to the Moon’s surface and return them to the command and service module in lunar orbit. This division of tasks allowed one part of the crew to work on the surface while another astronaut remained in lunar orbit.

From flight tests to lunar landings

After an Apollo 1 command-module fire during a ground test in January 1967 killed astronauts Virgil Grissom, Edward White and Roger Chaffee, NASA investigated the accident and reworked the spacecraft before crewed flights resumed. Apollo 7, launched in October 1968, was the first crewed Apollo flight; Apollo 8 carried astronauts around the Moon later that year. Apollo 11 achieved the first crewed lunar landing on July 20, 1969. Five further Apollo missions—12, 14, 15, 16 and 17—also landed crews on the Moon. Apollo 13 did not land: after an onboard explosion, the crew circled the Moon and returned safely to Earth. Apollo 17, in December 1972, was the program’s final lunar mission.

Lunar science and lasting records

The landings were scientific field missions as well as demonstrations of human spaceflight. Astronauts photographed and examined the surface, deployed instruments and collected lunar rocks and soil. Across six landings they brought back 2,196 samples, with a combined mass of about 382 kilograms. Laboratories continue to analyze this material with newer methods, using it to investigate the Moon’s formation and geological history. Mission transcripts, flight plans, photographs and other records also preserve the program’s technical and human history.

Key facts

Agency
NASA led the Apollo human spaceflight program.
Lunar landings
Six Apollo missions landed crews on the Moon between 1969 and 1972.
Spacecraft
The Apollo spacecraft used command, service and lunar modules; Saturn V launched lunar missions.
Samples returned
Apollo astronauts returned 2,196 lunar samples weighing about 382 kilograms in total.
Final lunar mission
Apollo 17, in December 1972, was the program’s last lunar mission.

Timeline

  1. May 25, 1961

    President John F. Kennedy called for a crewed lunar landing and safe return before the end of the decade.

  2. January 27, 1967

    A fire during an Apollo 1 ground test killed astronauts Virgil Grissom, Edward White and Roger Chaffee; NASA investigated and reworked the spacecraft.

  3. October–December 1968

    Apollo 7 became the first crewed Apollo flight, followed by Apollo 8’s first crewed journey to the vicinity of the Moon.

  4. July 20, 1969

    Apollo 11 made the first crewed landing on the Moon.

  5. December 1972

    Apollo 17 completed the program’s final lunar mission.

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Answers use only “Apollo Program” and its references, with citations.

References

  1. 1.
    The Apollo Program

    National Aeronautics and Space Administration (NASA) · other · reliability: high · retrieved 21 October 2026

    Supports: Apollo’s goals, spacecraft and launch vehicles, mission sequence, six lunar landings and the Apollo 13 emergency.

  2. 2.
    Address to Joint Session of Congress May 25, 1961

    John F. Kennedy Presidential Library and Museum · other · reliability: high · retrieved 21 October 2026

    Supports: Primary-source transcript of Kennedy’s 1961 commitment to a crewed lunar landing and safe return before the end of the decade.

  3. 3.
    The Decision to Go to the Moon: President John F. Kennedy's May 25, 1961 Speech before a Joint Session of Congress

    NASA History Office · other · reliability: high · retrieved 21 October 2026

    Supports: Historical context for the lunar goal, the U.S.-Soviet space competition and the development of Project Apollo.

  4. 4.
    Apollo 1

    National Aeronautics and Space Administration (NASA) · other · reliability: high · retrieved 21 October 2026

    Supports: The January 1967 ground-test fire, the three crew members killed and NASA’s subsequent investigation and spacecraft rework.

  5. 5.
    Apollo 11

    National Aeronautics and Space Administration (NASA) · other · reliability: high · retrieved 21 October 2026

    Supports: Apollo 11’s objective, crew and first crewed lunar landing in July 1969.

  6. 6.
    Apollo program

    Smithsonian National Air and Space Museum · other · reliability: high · retrieved 21 October 2026

    Supports: Museum resources on the Apollo program, lunar missions and the first human Moon landing.

  7. 7.
    NASA’s Apollo Samples Yield New Information about the Moon

    NASA Science · other · reliability: high · retrieved 21 October 2026

    Supports: Number and mass of returned lunar samples and ongoing scientific study of Apollo material.

  8. 8.
    Space Exploration - NASA Records at the National Archives

    U.S. National Archives and Records Administration · other · reliability: high · retrieved 21 October 2026

    Supports: Archival records documenting Apollo missions, including Apollo 8 and Apollo 11 material.

References are suggested by the research engine and may be incomplete. Unverified URLs are omitted rather than guessed.

Article history

  1. Version 121 October 2026 · EditorCreated by Zapia