xenotechnology
xenoengineering
eetee
xenophysics
xenoscience
extraterrestrialization
cosmogenous
extraterrene
alienesque
xenomorphology
bug-eyed monster
other
ayy
allotrious
space invader
xeno-
xenogeology
xenocytology
xenobacteriology
xenoarchitecture
space alien
exocommunication
alienly
xenobiology
little green man
ultratelluric
Bracewell probe
alienism
visitor
unidentified flying object
xenology
xenochemistry
ultramundane
xenomicrobiology
extraplanetary
alien
alienkind
flying saucer
UFO
xenoarchaeology
foreign
extraterrestriality
xenobiochemistry
spacy
xenopaleontology
alienness
extramundane
alienage
saucerian
xenomorph