astronavigation n.

To turn back now, when we are almost within reach of our objective, to admit defeat and return to Aftwan as ignorant as when he left of what activates Shentol, would be a craven denial of all the principles of our association. It would retard the development of astronavigation indefinitely, a hopeless, indecisive, futile effort.

To qualify for membership, you had to perform a feat of astro-navigation tantamount to a miracle.

To turn back now, when we are almost within reach of our objective, to admit defeat and return to Aftwan as ignorant of what activates Shentol as when we left, would retard the development of astronavigation indefinitely.

We can only wait and hope we have hit on the way to find his home planet through making him want to learn astro[-]navigation and astronomy.

Rimmer was sitting at his slanting architect’s desk, under the pink glow of his study lamp, with a tray of watercolours, making out a revision timetable in preparation for his astronavigation exam.

Making astronavigation interesting was not an easy task.

You know, I worked in astronavigation. On a starship, for God’s sake. But we never drove a hulk ship across the solar system.