xenophysics
xenoscience
extraterrestrialization
xenogeology
xenoengineering
cosmogenous
extraterrene
xenotechnology
xeno-
xenochemistry
bug-eyed monster
xenopaleontology
xenoarchitecture
xenomicrobiology
xenomorphology
extramundane
space invader
alien
xenocytology
exocommunication
extraterrestrialness
space alien
ultratelluric
eetee
ultramundane
extraterrestrially
alien abduction
extraterrestriality
bolide
visitor
xenobacteriology
alienkind
extraplanetary
spacy
astrobiology
exobiology
space biology
exogenesis
xenobiochemistry
alienesque
micrometeoroid
supraterrestrial
xenohistory
astrohistory
xenoethics
alienism
saucerian
xenobiology
alienly
unidentified flying object