1) Science fiction theme
Found on
https://www.crosswordclues.com/clue/astrogation
Astrogation is the planning of a route through space and the actual navigation of spacecraft, either in interplanetary travel or in interstellar travel. The mathematical principles governing interplanetary astrogation were first derived by mathematical physicists in the 19th and 20th centuries. Two tasks define navigation: (1) determining present ...
Found on
http://en.wikipedia.org/wiki/Astrogation
No exact match found.
