Apollo Program

Apollo 1 was intended to become the first crewed flight of NASA's Apollo spacecraft. The mission never launched. During a launch rehearsal on January 27, 1967, a cabin fire claimed the lives of astronauts Virgil I. Grissom, Edward H. White II, and Roger B. Chaffee. The tragedy forced NASA to confront serious spacecraft, testing, and safety failures before continuing toward the Moon.

Apollo 4 was the first flight of the Saturn V, the enormous rocket built to carry astronauts to the Moon. The uncrewed mission tested all three rocket stages together, restarted the third stage in space, fired the Apollo spacecraft's main engine, and sent the Command Module back through Earth's atmosphere at nearly the speed of a spacecraft returning from the Moon.

Apollo 5 was the first flight of NASA's Lunar Module, the extraordinary spacecraft designed exclusively to land astronauts on the Moon. The uncrewed mission tested both the descent and ascent engines, validated the Lunar Module's guidance systems, and proved that the vehicle could perform the complex maneuvers required for future lunar landings.

Apollo 6 was the second and final uncrewed test flight of the Saturn V rocket. Although the mission experienced severe engine failures and dangerous pogo oscillations, NASA successfully demonstrated the Apollo spacecraft's ability to return safely from a simulated lunar mission and gathered critical engineering data that paved the way for the first crewed Saturn V flight.

Apollo 7 was the first crewed Apollo mission and NASA's first human spaceflight after the Apollo 1 tragedy. During an eleven-day Earth-orbit mission, the crew thoroughly tested the redesigned Apollo Command and Service Module, proving it was safe for future missions to the Moon and restoring confidence in the Apollo Program.

Apollo 8 became the first crewed mission to leave Earth orbit, travel to the Moon, enter lunar orbit, and safely return home. During ten revolutions around the Moon, the crew photographed the now-famous Earthrise image and broadcast a Christmas Eve message watched by hundreds of millions of people around the world.

Apollo 9 was the first crewed flight of the Apollo Lunar Module. During ten days in Earth orbit, astronauts tested every major maneuver required for a Moon landing, including docking, undocking, independent Lunar Module flight, spacewalks, and rendezvous, proving the complete Apollo landing system before committing crews to lunar orbit.

Apollo 10 was NASA's complete dress rehearsal for the first Moon landing. Every phase of a lunar landing mission was performed except the final descent to the surface. The Lunar Module descended to within about 9 miles (15 km) of the Moon before returning safely to lunar orbit.

Apollo 11 fulfilled President John F. Kennedy's challenge by becoming the first mission to land humans on the Moon. Neil Armstrong and Buzz Aldrin spent over twenty-one hours on the lunar surface while Michael Collins remained in lunar orbit aboard the Command Module Columbia.

Apollo 12 demonstrated that NASA could land on the Moon with pinpoint accuracy. Despite being struck by lightning twice during launch, the mission successfully landed beside the Surveyor 3 spacecraft, performed two lunar EVAs, deployed advanced scientific experiments, and returned pieces of Surveyor 3 to Earth for analysis.

Apollo 13 was intended to become humanity's third lunar landing, but an explosion in an oxygen tank transformed it into one of the greatest rescue missions in history. Through extraordinary teamwork between the crew and Mission Control, NASA safely returned all three astronauts to Earth despite catastrophic spacecraft damage.

Apollo 14 returned astronauts to the Moon after the Apollo 13 accident. Despite a critical Lunar Module abort-switch malfunction just before landing, the crew safely reached the Fra Mauro Highlands, completed two successful moonwalks, deployed scientific experiments, and restored confidence in NASA's ability to conduct lunar exploration.

Apollo 15 was the first of NASA's extended J-missions, introducing the Lunar Roving Vehicle and dramatically expanding the scientific exploration of the Moon. The mission returned a record collection of lunar samples, deployed advanced experiments, and discovered the famous Genesis Rock.

Apollo 16 became NASA's fifth successful lunar landing mission and the only Apollo mission to explore the ancient lunar highlands. Despite a mission-threatening delay caused by concerns with the Command Module's main engine, the crew completed three moonwalks, deployed advanced scientific experiments, and returned more than 95 kilograms of lunar samples.

Apollo 17 was the sixth and final crewed lunar landing mission of the Apollo Program. Carrying the only professional geologist to walk on the Moon, the crew completed the longest surface stay, drove the Lunar Roving Vehicle farther than any previous mission, returned the largest collection of lunar samples, and concluded humanity's first era of lunar exploration.