Apolo 11

Apollo 11

Neil Armstrong descends a ladder to become the first human to step onto the surface of the Moon
Mission type	Manned lunar landing
Operator	NASA
COSPAR ID	CSM: 1969-059A LM: 1969-059C
SATCAT no.	CSM: 4039 LM: 4041
Mission duration	8 days, 3 hours, 18 minutes, 35 seconds
Spacecraft properties
Spacecraft	Apollo CSM-107 Apollo LM-5
Manufacturer	CSM: North American Rockwell LM: Grumman
Launch mass	100,756 pounds (45,702 kg)
Landing mass	10,873 pounds (4,932 kg)
Crew
Crew size	3
Members	Neil A. Armstrong Michael Collins Edwin E. "Buzz" Aldrin, Jr.
Callsign	CSM: Columbia LM: Eagle On surface: Tranquility Base
Start of mission
Launch date	July 16, 1969, 13:32:00 (1969-07-16UTC13:32Z) UTC
Rocket	Saturn V SA-506
Launch site	Kennedy LC-39A
End of mission
Recovered by	USS Hornet
Landing date	July 24, 1969, 16:50:35 (1969-07-24UTC16:50:36Z) UTC
Landing site	North Pacific Ocean 13°19′N 169°9′W / 13.317°N 169.150°W / 13.317; -169.150 (Apollo 11 splashdown)
Orbital parameters
Reference system	Selenocentric
Periselene	100.9 kilometers (54.5 nmi)
Aposelene	122.4 kilometers (66.1 nmi)
Inclination	1.25 degrees
Period	2 hours
Epoch	July 19, 1969, 21:44 UTC
Lunar orbiter
Spacecraft component	Command/Service Module
Orbital insertion	July 19, 1969, 17:21:50 UTC
Orbital departure	July 22, 1969, 04:55:42 UTC
Orbits	30
Lunar lander
Spacecraft component	Lunar Module
Landing date	July 20, 1969, 20:18:04 UTC
Return launch	July 21, 1969, 17:54 UTC
Landing site	Mare Tranquillitatis 0°40′27″N 23°28′23″E / 0.67408°N 23.47297°E / 0.67408; 23.47297
Sample mass	21.55 kilograms (47.51 lb)
Surface EVAs	1
EVA duration	2 hours, 31 minutes 40 seconds
Docking with LM
Docking date	July 16, 1969, 16:56:03 UTC
Undocking date	July 20, 1969, 17:44:00 UTC
Docking with LM ascent stage
Docking date	July 21, 1969, 21:35:00 UTC
Undocking date	July 21, 1969, 23:41:31 UTC
Left to right: Armstrong, Collins, Aldrin Apollo program ← Apollo 10 Apollo 12 →

Apollo 11 was the spaceflight that landed the first two humans on the Moon. Mission commander Neil Armstrong and pilot Buzz Aldrin, both American, landed the lunar module Eagle on July 20, 1969, at 20:18 UTC. Armstrong became the first to step onto the lunar surface six hours after landing on July 21 at 02:56:15 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 to bring back to Earth. Michael Collins piloted the command module Columbia alone in lunar orbit while they were on the Moon's surface. Armstrong and Aldrin spent just under a day on the lunar surface before rejoining Columbia in lunar orbit.

Apollo 11 was launched by a Saturn V rocket from Kennedy Space Center in Merritt Island, Florida, on July 16 at 9:32 am EDT (13:32 UTC) and was the fifth manned mission of NASA's Apollo program. The Apollo spacecraft had three parts: a command module (CM) with a cabin for the three astronauts, and the only part that landed back on Earth; a service module (SM), which supported the command module with propulsion, electrical power, oxygen, and water; and a lunar module (LM) that had two stages – a lower stage for landing on the Moon, and an upper stage to place the astronauts back into lunar orbit.