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