Who Mourns for Adonais? - S2-E2
Trivia: An ending that was planned but abandoned for this episode would have revealed that Lieutenant Palamas was pregnant with Apollo's child.
Who Mourns for Adonais? - S2-E2
Trivia: The hand seen stopping and holding the Enterprise is Gene Roddenberry's.
Who Mourns for Adonais? - S2-E2
Trivia: Originally they wanted Jon Voight for Apollo.
Who Mourns for Adonais? - S2-E2
Trivia: This is the first episode to feature all seven members of the original cast.
Chosen answer: If they're in orbit, they're being pulled along by the planet's gravity well, therefore, impulse engines would only be used for minor corrections and would be "on standby" while in orbit, but not active. (Like keeping your car idling without revving the engine and creating plumes of exhaust).
Captain Defenestrator
Thank you for the info.
Movie Nut