| 1935 A. M. Phillips Martian Gesture in Wonder Stories Oct. 572/2 | 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. |
| 1941 E. F. Russell in Astounding Sci. Fiction May 100/1 | To qualify for membership, you had to perform a feat of astro-navigation tantamount to a miracle. |
| 1949 A. M. Phillips Martian Gesture in Startling Stories Jan. 121/2 | 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. |
| 1989 G. Naylor Red Dwarf 61 | 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. |
| 1995 P. David Captain's Daughter iv. xix. 175 | Making astronavigation interesting was not an easy task. |
