Go back and forth in spacecraft (7)
I believe the answer is:
shuttle
'go' is the definition.
(shuttling is a kind of going)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for shuttle that I've seen before include "Transport regularly plying short route" , "Transport plying back and forth" , "It carries the horizontal thread in weaving" , "Weaving loom bobbin" , "Let huts (anag.)" .)