Interplanetary voyages 5 Space flight 5 Space ships 5 Exploration 4 Human-alien encounters 4 Science and civilization 4 Enemies 3 more ... Scott, Montgomery (Fictitious character) 3 Sulu, Hikaru (Fictitious character) 3 Exploration of outer space 2 Closed caption video recordings 1 Enterprise (Imaginary space vehicle) 1 Kirk, James T. (Fictitious character) 1 McCoy, Leonard (Fictitious character) 1 Spock (Fictitious character) 1 less ...