| Down-to-earth types? | 20 |
| Classic video game baddies | 26 |
| Area 51 guests | 14 |
| Alien force, briefly | 20 |
| Alf and Mork, e.g. | 18 |
| Alf and Mork, briefly | 21 |
| "The X-Files" subj. | 29 |
| "Men in Black" concerns, briefly | 42 |
| UFO sightings | 13 |
| UFO riders | 10 |
| UFO navigators | 14 |
| UFO drivers, ostensibly | 23 |
| UFO crew? | 9 |
| U.F.O. occupants | 16 |
| They're from waaaay out of town | 35 |
| They may come down to Earth | 27 |
| They can cover a lot of space | 29 |
| Subjects for special fx artists | 31 |
| Staples in pulp mags | 20 |
| Space invaders, for short | 25 |
| Space aliens, for short | 23 |
| Some sci-fi creatures | 21 |
| Some CGI creations | 18 |
| Sci-fi group | 12 |
| Sci-fi beings: Abbr. | 20 |
| Saucer contents? | 16 |
| Saturn drivers? | 15 |
| SAT company | 11 |
| S.A.T. org. | 11 |
| Pilots who did not attend flight school | 39 |
| Orly connections? | 17 |
| Martians, e.g., in brief | 24 |
| Many Trekkie costumes | 21 |
| Little green men, briefly | 25 |
| Little green men (abbr.) | 24 |
| Latin conjunctions | 18 |
| GRE company | 11 |
| French connectors | 17 |
| French connections? | 19 |
| Foreign visitors? | 17 |
| Flying saucer fliers, for short | 31 |
| Dolls of the 80's | 21 |
| Doctor Who and others, briefly | 30 |
| Co. that administers the GRE | 28 |
| Cannes connections | 18 |
| Bug-eyed monsters with green skin | 33 |
| Brief strangers? | 16 |
| Area 51's contents, purportedly | 35 |
| Area 51 visitors, perhaps | 25 |
| Ands, in Avignon | 16 |
| Aliens | 6 |
| ''The Outer Limits'' extras | 43 |
| ''Independence Day'' assailants, briefly | 56 |
| X-files subjects, for short | 27 |
| Visitors to the Enterprise, briefly | 35 |
| Visitors to the Enterprise | 26 |
| Visitors to Earth, for short | 28 |
| Visitors from Venus, say | 24 |
| Visitors from outer space (abbr.) | 33 |
| Visitors from far, far away | 27 |
| Visitors from beyond | 20 |
| Visitors from afar? | 19 |
| Visitors from afar: Abbr. | 25 |
| Versailles connections | 22 |
| Venusians and others, for short | 31 |
| Uranians, e.g., in brief | 24 |
| Uranians, e.g. | 14 |
| Unexpected visitors, for short | 30 |
| Unexpected fictional visitors | 29 |
| UFU pilots, maybe | 17 |
| UFO's crew | 14 |
| UFO types | 9 |
| UFO staff | 9 |
| UFO pilots? | 11 |
| UFO pilots, supposedly | 22 |
| UFO pilots, presumably | 22 |
| UFO pilots, perhaps | 19 |
| UFO pilots, ostensibly | 22 |
| UFO pilots, maybe | 17 |
| UFO personnel | 13 |
| UFO people, perhaps | 19 |
| UFO people | 10 |
| UFO occupants, perhaps | 22 |
| UFO occupants, maybe | 20 |
| UFO navigators, so they say | 27 |
| UFO fliers, supposedly | 22 |
| UFO drivers | 11 |
| UFO crew, supposedly | 20 |
| UFO crew, presumably | 20 |
| UFO crew, maybe | 15 |
| U.F.O.'s crew | 17 |
| TV's Alf and others | 23 |
| Tribbles, e.g. | 14 |
| Travelers from another galaxy, for short | 40 |
| Tralfamadorians, e.g. | 21 |
| Toy store aliens | 16 |
| Those aboard a U.F.O. | 21 |
| They're typically known to have big heads | 45 |
| They're stereotypically green | 33 |
| They're not from these parts, for short | 43 |