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Apollo 13 (April 11–17, 1970) was the seventh crewed mission in the Apollo space program and the third meant to land on the Moon. The craft was launched from Kennedy Space Center on April 11, 1970, but the lunar landing was aborted after an oxygen tank in the service module (SM) ruptured two days into the mission, disabling its electrical and ...
- April 11, 1970, 19:13:00 UTC
- 5 days, 22 hours, 54 minutes, 41 seconds
- 44,069 kg (CSM: 28,881 kg; LM: 15,188 kg)
- Saturn V SA-508
Jun 30, 1995 · A Hollywood drama based on the events of the Apollo 13 lunar mission, where an oxygen tank explosion threatens the lives of the three astronauts on board. See cast, crew, reviews, trivia, goofs, quotes, soundtracks and more on IMDb.
- (308K)
- Adventure, Drama, History
- Ron Howard
- 1995-06-30
Nov 3, 2023 · Learn about the Apollo 13 mission that was supposed to land on the Moon but faced a severe problem and returned safely to Earth. Explore articles, videos, and images from the crew, the review board, and the mission team.
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- Overview
- Houston, we’ve had a problem
- Around the Moon
U.S. spaceflight Apollo 13 was launched on April 11, 1970.
Where was the launch site of Apollo 13?
The Apollo 13 spaceflight was launched from Kennedy Space Center, Cape Kennedy, Florida, by a giant Saturn V launch vehicle and minutes later was inserted into orbit around Earth.
Who were the crew of Apollo 13?
The three astronauts of Apollo 13 were commander Jim Lovell, lunar module pilot Fred Haise, and command module pilot Jack Swigert.
What happened during the Apollo 13 mission?
Apollo 13 was launched from Cape Kennedy, Florida, by a giant Saturn V launch vehicle and only minutes later was inserted into orbit around Earth. About 2.5 hours after launch, the still-attached S IVB third stage was reignited to provide the final boost toward the Moon. The transposition maneuver (removing the lunar module, code-named Aquarius, from the S IVB adapter) was carried out efficiently, and soon Apollo 13 was coasting toward the Moon on a path so accurate that the first planned course adjustment was canceled. Later in the mission, the craft underwent a hybrid transfer maneuver to facilitate landing in the difficult Fra Mauro region of the Moon. To do this, the service module’s propulsion system provided a 4.6-metre- (15-foot-) per-second velocity change designed to lower the command module’s closest approach to the Moon from 389 km (242 miles) to 109 km (68 miles) and place the craft on a “non-free-return” trajectory. This meant that should no further propulsive maneuver be made during the flight, the craft would not swing around the Moon and return directly to Earth on a “free-return” trajectory but instead would miss Earth by 4,750 km (2,950 miles). However, a shift back to a free-return trajectory was within the capability of both the service module propulsion system and the lunar module descent stage propulsion system. So accurate was the hybrid transfer that a scheduled course correction was canceled.
April 12, the day after launch, passed without incident. Early on the evening of April 13, the astronauts pressurized the lunar module Aquarius, and Lovell and Haise passed from the command module Odyssey through the connecting tunnel while checking all systems for the forthcoming landing. Suddenly, as Lovell was moving through the tunnel on his way back from Aquarius to Odyssey, a loud explosion was heard. All three astronauts quickly gathered in Odyssey to study the instruments in an effort to determine what had happened. Noting that one of the main electrical systems aboard was degrading, Haise and Lovell radioed the information to mission control in Houston, quickly turning a routine flight into one of the most exciting episodes in space history.
Haise: Okay, Houston—
Lovell: I believe we’ve had a problem here.
Mission control: This is Houston. Say again please.
Lovell: Houston, we’ve had a problem. We’ve had a main B bus undervolt.
The anxiety for the safety of the astronauts was felt in every corner of the globe, and millions of persons remained glued to television and radio sets as the perilous journey unfolded. Still three days away from Earth, the astronauts moved into the lunar module Aquarius, which they powered up before shutting down the command module Odyssey to conserve the latter’s emergency battery power for the atmospheric reentry maneuver at the end of the mission. Only the command module could pass through Earth’s atmosphere; the lunar module would have to be discarded, along with the service module, before the outer atmosphere was reached. In the meantime, however, the lunar module would be their home.
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When the astronauts first transferred into and activated Aquarius, Apollo 13 was about 20 hours from the Moon. Plans were made for transferring out of the hybrid trajectory and onto the free-return trajectory, a maneuver that was executed in the early morning hours of April 14. At mission control, teams of experts worked to check out all feasible maneuvers and situations in flight simulators, feeding every plan and contingency through computers. Leaders from all parts of the world voiced concern, and from Soviet Premier Aleksey N. Kosygin came the message that “the Soviet Government has given orders to all citizens and members of the armed forces to use all necessary means to render assistance in the rescue of the American astronauts.” Four Soviet ships began moving toward the planned recovery area, while French and British warships also moved to the rescue. Radio contact with Apollo 13 was lost during the evening of April 14 as the craft swung behind the Moon, passing at an altitude of 264 km (164 miles) at the closest approach. (Since their trajectory had a higher lunar altitude than other Apollo missions, Apollo 13 set the record for farthest flight from Earth of 401,056 km [249,205 miles].) Soon afterward the spacecraft started along its return path home. Meanwhile, the long-since-discarded S IVB third stage crashed onto the Moon—it had followed an independent trajectory—as part of a planned experiment to cause an artificial moonquake to aid scientists in understanding the nature of the lunar interior. When the astronauts learned from Houston of the stage’s impact, Swigert radioed back, “Well, at least something worked on this flight.…I’m sure glad we didn’t have an LM [Lunar Module] impact too!”
- The Editors of Encyclopaedia Britannica
Feb 20, 2010 · Learn about the seventh manned mission in the Apollo Space program, which was supposed to be the third lunar landing but turned into a rescue operation after an explosion. Find out how the crew survived, the farthest distance from Earth they reached and the movie based on their story.
Learn about the Apollo 13 mission, which was supposed to land on the Moon but became a "successful failure" after an explosion. Explore the objects, stories, and videos from the Museum's collection and hear from the astronauts and controllers themselves.
Aug 10, 2023 · last updated 10 August 2023. Apollo 13 is famously described as a "successful failure". Learn more about the mission here. Comments (1) The crewmembers of the Apollo 13 mission step aboard...
