Apollo program
Shortly after Gemini 10, Collins was assigned to the backup crew for the second crewed Apollo flight, with Borman as commander (CDR), Stafford as command module pilot (CMP), and Collins as lunar module pilot (LMP). Along with learning the new Apollo command and service module (CSM) and the Apollo Lunar Module (LM), Collins received helicopter training, as these were thought to be the best way to simulate the landing approach of the LM. After the completion of Project Gemini, it was decided to cancel the Apollo 2 flight, since it would just repeat the Apollo 1 flight. Stafford was given his own crew, and Anders was assigned to Borman's crew. Slayton had decided an Apollo mission commander should be an experienced astronaut who had already flown a mission, and that on flights with a LM, the CMP should also have some spaceflight experience, something Anders did not yet have, since the CMP would have to fly the CM alone. Collins was therefore moved to the CMP position on the Apollo 9 prime crew, and Anders became the LMP. The practice became that the CMP would be the next most senior member of the crew, and that they would go on to command later Apollo flights.
Staff meetings were always held on Fridays in the Astronaut Office, and it was here that Collins found himself on January 27, 1967. Don Gregory was running the meeting in the absence of Shepard and so it was he who answered the red phone to be informed there had been a fire in the Apollo 1 CM, and that the three astronauts, Gus Grissom, Ed White and Roger Chaffee were dead. When the enormity of the situation was ascertained, it fell on Collins to go to the Chaffee household to inform Martha Chaffee that her husband had died. The Astronaut Office had learned to be proactive in informing astronauts' families of a death quickly, because of the death of Theodore Freeman in an aircraft crash in 1964, when a newspaper reporter was the first to his house.
Collins and Scott were sent by NASA to the Paris Air Show in May 1967. There they met cosmonauts Pavel Belyayev and Konstantin Feoktistov, with whom they drank vodka on the Soviets' Tupolev Tu-134. Collins found it interesting that some cosmonauts were doing helicopter training like their American counterparts, and Belyayev said he hoped to make a circumlunar flight soon. The astronauts' wives had accompanied them on the trip, and Collins and his wife Pat were compelled by NASA and their friends to travel to Metz, where they had been married ten years before. There, they found a third wedding ceremony had been arranged for them (ten years previously they had already had civil and religious ceremonies), so they could renew their vows.
During 1968, Collins noticed his legs were not working as they should, first during handball games, then as he walked down stairs. His knee would almost give way, and his left leg had unusual sensations when in hot and cold water. Reluctantly he sought medical advice and the diagnosis was a cervical disc herniation, requiring two vertebrae to be fused. The surgery was performed at Wilford Hall Hospital at Lackland Air Force Base, Texas. The planned recuperation time was three to six months. Collins spent three months in a neck brace. As a result, he was removed from the prime crew of Apollo 9 and his backup, Jim Lovell, replaced him as CMP. When the Apollo 8 mission was changed from a CSM/LM mission in high Earth orbit to a CSM-only flight around the Moon, both prime and backup crews for Apollo 8 and 9 swapped places.
Having trained for the flight, Collins was made a capsule communicator (CAPCOM), an astronaut stationed at Mission Control responsible for communicating directly with the crew during a mission. As part of the Green Team, he covered the launch phase up to translunar injection, the rocket burn that sent Apollo 8 to the Moon. The successful completion of the first crewed circumlunar flight was followed by the announcement of the Apollo 11 crew of Armstrong, Aldrin, and Collins. At that time, in January 1969, it was uncertain this would be the lunar landing mission; this depended on the success of Apollo 9 and Apollo 10 testing the LM.
As CMP, Collins' training was completely different from the LM and lunar EVA, and was sometimes done without Armstrong or Aldrin being present. Along with simulators, there were measurements for pressure suits, centrifuge training to simulate the reentry, and practicing docking with a huge rig at NASA Langley Research Center, Hampton, Virginia. Since he would be the active participant in the rendezvous with the LM, Collins compiled a book of 18 different rendezvous schemes for various scenarios including ones where the LM did not land, or it launched too early or too late. This book ran for 117 pages.
The mission patch of Apollo 11 was the creation of Collins. Jim Lovell, the backup commander, mentioned the idea of eagles, a symbol of the United States. Collins liked the idea and found a painting by artist Walter A. Weber in a National Geographic Society book, Water, Prey, and Game Birds of North America, traced it and added the lunar surface below and Earth in the background. The idea of an olive branch, a symbol of peace, came from a computer expert at the simulators. The call sign Columbia for the CSM came from Julian Scheer, the NASA Assistant Administrator for Public Affairs. He mentioned the idea to Collins in a conversation and Collins could not think of anything better.
During the training for Apollo 11, Slayton offered to get Collins back into the crew sequence after the flight. Collins would most likely have been the backup commander of Apollo 14, followed by commander of Apollo 17, but he told Slayton he did not want to travel to space again if Apollo 11 was successful. The difficult schedule of an astronaut strained his family life. He wanted to help achieve John F. Kennedy's goal of landing on the Moon within the decade and had no interest in further exploration of the Moon once the goal was achieved. The assignment was given to Cernan.
An estimated one million spectators watched the launch of Apollo 11 from the highways and beaches in the vicinity of the launch site. The launch was televised live in 33 countries, with an estimated 25 million viewers in the United States alone. Millions more listened to radio broadcasts. Propelled by a giant Saturn V rocket, Apollo 11 lifted off from Launch Complex 39A at the Kennedy Space Center on July 16, 1969, at 13:32 UTC (09:32 EDT), and entered Earth orbit twelve minutes later. After one and a half orbits, the S-IVB third-stage engine pushed the spacecraft onto its trajectory toward the Moon. About 30 minutes later, Collins performed the transposition, docking, and extraction maneuver. This involved separating Columbia from the spent S-IVB stage, turning around, and docking with the Lunar Module Eagle. After it was extracted, the combined spacecraft headed for the Moon, while the rocket stage flew on a trajectory past it.
On July 19 at 17:21:50 UTC, Apollo 11 passed behind the Moon and fired its service propulsion engine to enter lunar orbit. In the thirty orbits that followed, the crew saw passing views of their landing site in the southern Sea of Tranquillity about 12 miles (19 km) southwest of the crater Sabine D. At 12:52:00 UTC on July 20, Aldrin and Armstrong entered Eagle and began the final preparations for lunar descent. At 17:44:00 Eagle separated from Columbia. Collins, alone aboard Columbia, inspected Eagle as it rotated before him to ensure the craft was not damaged and that the landing gear had correctly deployed before heading for the surface.
During his day flying solo around the Moon, Collins never felt lonely. Although Mission Control speculated in that day's log that "not since Adam has any human known such solitude", Collins felt very much a part of the mission. In his autobiography he wrote "this venture has been structured for three men, and I consider my third to be as necessary as either of the other two". In the 48 minutes of each orbit when he was out of radio contact with the Earth while Columbia passed round the far side of the Moon, the feeling he reported was not fear or loneliness, but rather "awareness, anticipation, satisfaction, confidence, almost exultation".
One of Collins' first tasks was to identify the lunar module on the ground. To give Collins an idea where to look, Mission Control radioed that they believed the lunar module landed about four miles off target. Each time he passed over the suspected landing site, he tried in vain to find the lunar module. On his first two orbits on the far side of the Moon, Collins performed maintenance activities such as dumping excess water produced by the fuel cells and preparing the cabin for Armstrong and Aldrin to return. Columbia orbited the Moon thirty times.
Just before he reached the far side on the third orbit, Mission Control informed Collins there was a problem with the temperature of the coolant. If it became too cold, parts of Columbia might freeze. Mission Control advised him to assume manual control and implement Environmental Control System Malfunction Procedure 17. Instead, Collins flicked the switch on the offending system from automatic to manual and back to automatic again, and carried on with normal housekeeping chores, while keeping an eye on the temperature. When Columbia came back around to the near side of the Moon again, he was able to report that the problem had been resolved. For the next couple of orbits, he described his time on the far side of the Moon as "relaxing". After Aldrin and Armstrong completed their EVA, Collins slept so he could be rested for the rendezvous. While the flight plan called for Eagle to meet up with Columbia, Collins was prepared for certain contingencies in which he would fly Columbia down to meet Eagle. After spending so much time with the CSM, he felt compelled to leave his mark on it, so during the second night following their return from the Moon, he went to the lower equipment bay of the CM and wrote:
"Spacecraft 107 – alias Apollo 11 – alias Columbia. The best ship to come down the line. God Bless Her. Michael Collins, CMP"
In a July 2009 interview with The Guardian, Collins said that he was very worried about Armstrong and Aldrin's safety. He was also concerned in the event of their deaths on the Moon, he would be forced to return to Earth alone and, as the mission's sole survivor, be regarded as "a marked man for life".
At 17:54 UTC on July 21, Eagle lifted off from the Moon to rejoin Collins aboard Columbia in lunar orbit. After rendezvous with Columbia, the ascent stage was jettisoned into lunar orbit, and Columbia made its way back to Earth.
Columbia splashed down in the Pacific Ocean 1,440 nmi (2,660 km) east of Wake Island at 16:50 UTC (05:50 local time) on July 24. The total mission duration was eight days, three hours, 18 minutes, and thirty-five seconds. Divers passed biological isolation garments (BIGs) to the astronauts, and assisted them into the life raft. Though the chance of bringing back pathogens from the lunar surface was believed to be remote, it was still considered a possibility. The astronauts were winched on board the recovery helicopter, and flown to the aircraft carrier USS Hornet, where they spent the first part of the Earth-based portion of 21 days of quarantine (time in space was also counted), before moving on to Houston.
On August 13, the three astronauts rode in parades in their honor in New York and Chicago, with about six million attendees. On the same evening in Los Angeles there was an official state dinner to celebrate the flight, attended by members of Congress, 44 governors, the Chief Justice of the United States, and ambassadors from 83 nations at the Century Plaza Hotel. In September, the astronauts embarked on a 38-day world tour that brought them to 22 foreign countries and included visits with world leaders.
