When the Apollo 11 crew began training in 1968, it was not clear if theirs would be the first landing mission.

Do you plan to offer ground radar support for the lunar landing mission?

Apollo 11 is followed by five further landing missions, three carrying a sophisticated lunar rover vehicle.

Between the two of us, who would you rather have leading a dangerous landing mission?

It was time to proceed to an actual landing mission.

The film opens in 2018 with an American manned landing mission to the Moon.

An "Apollo 21" lunar landing mission appears in three twenty-first century works of fiction.

Lunex was a "direct landing" mission, in which a single very large spacecraft would fly to the Moon, land, and return.

This procedure was designed to prevent hardware failure so that the lunar landing mission could be continued.

Thus a landing mission would have rather demanding fuel requirements.