A wing - and a prayer
Alan Shepard took a Bible with him on his Mercury 3 flight. Apollo 8 read from Genesis as they circled the Moon on Christmas, 1968. Buzz Aldrin performed communion after landing on the Moon in 1969. Alan Bean ate the first spaghetti meal on the Moon several months later.
If astronauts and cosmonauts wish to perform rituals that will give them a sense of comfort out there in the Void, who can blame them?