Farthing's Comet
S01E14 - Airdate: 1973-12-22
Runtime: 60 min
The Ark's chief astronomer altered its course so he could study a comet: now the debris is seriously damaging the Ark. The thrusters that can move it to safety need to be fixed manually, and Devon volunteers for EVA to do the work.
Episode details and rating from TVmaze.