xenobiochemistry
xenomicrobiology
xenomorphology
xenochemistry
xenobacteriology
xenogeology
cosmogenous
xenoengineering
xenobiology
xenoscience
ultratelluric
xeno-
xenocytology
extraterrene
exocommunication
xenophysics
extramundane
extraterrestrialization
xenotechnology
alien
extraplanetary
ultramundane
alienkind
bug-eyed monster
spacy
visitor
benthic
exobiology
outcrossing
benthophil
astrobiology
space biology
xenoanthropology
flying saucer
unidentified flying object
space invader
UFO
eetee
bolide
xenopaleontology
xenochemical
extraterrestrially
alien nucleic acid
alienesque
hydrogenotroph
cryptobiont
exogenesis
exotic
xenoethics
exoelectrogen