The spaceship was blasted off from the launch pad without a hitch and when in orbit the occupants were told to open their sealed orders:
The occupants happened to be a monkey and Paddy.
The monkey opened the envelope that was about a foot thick, inside were all the million and one things that a space rocket ship driver must do.
Check this check that, do this experiment and so on, when he got to the bottom of the pile there was a small envelope addressed to Paddy.
Paddy opened it and saw on the even smaller piece of paper these three words…
Feed the monkey!