xenomorphology
xenoengineering
xenobiochemistry
xenoscience
cosmogenous
xenochemistry
xenomicrobiology
xenotechnology
xenocytology
xenoarchitecture
xenophysics
astrobiology
exobiology
space biology
xenobiology
xenogeology
extraterrestrialization
xeno-
extraplanetary
eetee
ultratelluric
exocommunication
space invader
xenobacteriology
xenoarchaeology
alien
extraterrene
spacy
meteoroid
meteor
xenoanthropology
bolide
unidentified flying object
xenopaleontology
UFO
flying saucer
alienesque
visitor
ultramundane
alienkind
bug-eyed monster
bioship
extraterrestrially
alienly
exogenesis
exopolitics
space alien
extramundane
xenomorph
extraterrestriality