ultramundane
ultratelluric
extramundane
extraplanetary
extraterrene
extraterrestrially
cosmogenous
xenoarchitecture
bug-eyed monster
xenoscience
xenophysics
alienesque
eetee
extraterrestrialness
alienkind
spacy
xeno-
exocommunication
extraterrestrial
superearthly
xenoethics
xenotechnology
alien
space alien
xenogeology
antevasin
exoplanetary
visitor
extraterrestriality
xenopaleontology
bolide
astrobiology
exobiology
unearthly
space biology
alienism
aliensdidit
xenobiochemistry
nonextraterrestrial
xenoengineering
foreign
xenoanthropology
extraterrestrialization
flying saucer
UFO
ancient astronaut
exogenesis
unidentified flying object
supraterrestrial
allotrious