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Related Clues:
- Space aliens, for short
- Sci-fi beings
- The 'gods' in 'Chariots of the Gods?,' in brief
- One line at passport control
- Roswell, N.M. visitors?
- They're out of this world
- Many "Star Trek" characters
- Alf and Mork, briefly
- Some sci-fi creatures
- To us, they're worlds apart
- The invaders in 'The Invaders'
- Ufologist's concern
- Klingons and Vulcans
- Otherworldly ones, for short
- Saturn drivers?