xenoarchitecture
extraterrestrialization
cosmogenous
xenophysics
ultramundane
extraplanetary
xenomorphology
xenotechnology
bug-eyed monster
alienesque
extraterrene
xenoscience
saucerian
xeno-
rover
space alien
supercivilization
xenogeology
xenoengineering
exoearth
extraterrestrially
alienkind
ultratelluric
Proserpina
unidentified flying object
meteoroid
meteor
spaceship
starship
extramundane
exobiology
eetee
supraterrestrial
astrobiology
spaceward
spacewards
space biology
visitor
bolide
little green man
xenochemistry
exopolitics
UFO
flying saucer
xenopaleontology
Earthport
translunar
stars
xenohistory
space invader