Ken Mattingly flew as Command Module Pilot on Apollo 16.
It was Astronaut Jack Swigert who replaced the sick astronaut Thomas Mattingly.
Ken Mattingly was originally assigned to the Apollo 13 mission but was replaced by Jack Swigert due to concerns of exposure to German measles.
Apollo 11 was the first mission to land an astronaut on the moon.
Astronaut Neil Armstrong was the commander of Apollo 11.
The astronaut of Apollo 8 and Apollo 13 was James Lovell.
On the back-up crew Charlie Duke got the measles and they took Ken Mattingly off of the mission because he was exposed to them and was supposed to get sick but he never did.
The Apollo 11 mission landed astronauts on the moon in July 1969.
The Apollo 11 mission, which successfully landed the first humans on the Moon in July 1969, did not include astronaut John Young. Young was a prominent astronaut who later commanded the Apollo 16 mission in 1972 but was not part of the Apollo 11 crew. The Apollo 11 crew consisted of Neil Armstrong, Buzz Aldrin, and Michael Collins.
It was astronaut Eugene cernan, in Apollo 17
The name of that astronaut was Thomas. K. Mat tingly and he was first chosen to fly in the Apollo 13 with James Lovell , Fred. w. Haise . So the back up astronaut Jack Swigert took his place.
Michael Collins was the astronaut who was not on the Apollo 11 mission. He was the Command Module Pilot for Apollo 11 and stayed in lunar orbit while Neil Armstrong and Buzz Aldrin landed on the moon.
Apollo 14 was launched on January 31, 1971. This mission was the third crewed mission to land on the moon and was commanded by astronaut Alan Shepard.