Human-alien encounters 12 Exploration 8 Space ships 6 Extraterrestrial beings 5 Interplanetary voyages 5 Space flight 5 Enemies 3 tuilleadh ... Friendship 3 Manned space flight 3 Science and civilization 3 Scott, Montgomery (Fictitious character) 2 Sulu, Hikaru (Fictitious character) 2 Astronaves 1 Audio-visual materials 1 Enterprise (Imaginary space vehicle) 1 Espacio exterior 1 Exploration of outer space 1 Fantasy films 1 Resurrection 1 Seres extraterrestres 1 Space warfare 1 Video recordings for the hearing impaired 1 Vuelo espacial 1 Vuelo espacial tripulado 1 lúide ...