bug-eyed monster
space alien
extraterrestrialness
eetee
xenophysics
alienkind
extraterrestriality
visitor
xenoscience
extraterrestrial
xenogeology
exocommunication
flying saucer
UFO
unidentified flying object
bolide
alien abduction
xenobiochemistry
alien
xenoengineering
ancient astronaut
xenopaleontology
xenotechnology
xenoethics
xenoarchitecture
close encounter
alienism
outlander
Tall White
exogenesis
meteoroid
saucerian
meteor
xenochemistry
alienage
xenobiology
alienness
astrobiology
extraterrestrialization
exobiology
space biology
alienship
xenofiction
unearthliness
little green man
xenomicrobiology
xenocytology
unidentified aerial phenomenon
stranger
first contact