xenoengineering
xenotechnology
xenoscience
xenomorphology
xenophysics
extraterrestrialization
exocommunication
xenogeology
cosmogenous
xenobacteriology
xenocytology
xenomicrobiology
xenobiochemistry
alien
astrobiology
exobiology
space biology
UFO
flying saucer
space invader
unidentified flying object
xenobiology
alienesque
xeno-
extraterrene
xenochemistry
eetee
xenopaleontology
xenoarchitecture
bug-eyed monster
extraplanetary
xenoanthropology
ultratelluric
alienkind
xenohistory
astrohistory
extramundane
xenobotany
ultramundane
alienly
allotrious
spacy
xenomythology
visitor
space alien
xenonatomy
xenomorph
extraterrestriality
other
ayy