Buzz Aldrin's memoirs and the Tom Hanks’s Emmy- winning HBO mini-series, From the Earth to the Moon (1998), tell us of this act of Christian worship 235,000 miles from Earth. The above YouTube clip shows the Communion scene acted out in the movie.
The sound clips in the following video are from recordings of the astronauts reading from Genesis while orbiting the Moon at Christmas time, the Bible reading that celebrated opponent of Christianity, Madelyn Murray O’Hare had taken the lawsuit against NASA over. This was the reason that Buzz was asked to not read the passage back to Earth. So, he took Communion with God, there on the Moon... just God and the man on the Moon.
(Source http://history.nasa.gov/SP-350/ch-8-4.html A page of NASA's History titled: Apollo's Expeditions to the Moon. http://history.nasa.gov/SP-350/cover.html)
It is also poignant to know that a worship service took place on the Moon, for wherever man is, he ought to worship the Creator of all the Universe.