You are correct.
This is from Catholic answers forums:
COMMUNION ON THE MOON Guideposts July 1989 p. 23
Twenty yrs. ago, on July 20, astronauts Neil Armstrong and Buzz Aldrin climbed out of their lunar module Eagle and took their historic 1st steps on the moon. Little known to others, another first took place on that day.
Before the lift-off, Aldrin was looking for a way to honor God’s presence in the Apollo 11 space mission. He talked with his minister, Dean Woodruff of Webster Presbyterian Church in Houston. When in their discussions the Christian sacrament of communion was mentioned, a plan emerged.
Two Sundays before the moon shot, Aldrin participated in a small, private communion service at his congregation, after which his minister broke off a corner of the communion bread and gave it to Aldrin along with a tiny chalice with some wine. Aldrin sealed these in plastic packets and safely stowed them in his personal preference kit (each astronaut was allowed to take a few personal items with him).
July 20, 1969 was a Sunday. At 3:17 P.M. (Houston time) the Eagle touched down. Aldrin took out the communion elements from their flight packets and put them on a small table in front of the abort guidance system computer. Then he called Houston, and asked for a few moments of silence. In the 1/6th gravity of the moon, he poured the wine, watching it curl gracefully up the side of the chalice. From a slip of paper he read the passage, “I am the vine, you are the branches. He who abides in Me, and I in him, he it is that bears much fruit, for apart from Me you can do nothing” (John 15:5 RSV). And then he took communion.
So it was that the first food eaten by man on the moon was in the name of our Lord.
This event was also recorded in Time as shared by R.Digest 6/72 that Aldrin commented “It was interesting to think that the very first liquid ever poured on the moon, and the first food eaten there, were communion elements.”
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There are countless millions of Christians who will not accept anything, even Christ, from the Catholic Church. (Frank Sheed)
I did not know this and thanks for the post describing it.