xenoscience
xenophysics
xenopaleontology
cosmogenous
xenoengineering
xenochemistry
extraterrestrialization
xenomorphology
extraterrene
xenobiology
exocommunication
xenotechnology
alien
xenogeology
xenocytology
bug-eyed monster
space biology
astrobiology
exobiology
xenology
ultratelluric
ultramundane
xeno-
xenobiochemistry
extraterrestriality
xenomicrobiology
eetee
alienesque
extramundane
xenobacteriology
alienkind
xenoarchitecture
aliensdidit
visitor
space alien
extraplanetary
exopolitics
space invader
xenohistory
astrohistory
exogenesis
alien abduction
bolide
first contact
spacy
extraterrestrially
UFO
xenoethics
unidentified flying object
flying saucer
xenoarchaeology
extraterrestrialness
Elohim
xenopsychology
foreign
allotrious
saucerian
micrometeoroid
alienism
ayy
other
xenofiction
alienly
xenoanthropology
little green man
supraterrestrial
alienness
alienage
meteoroid
meteor
xenosociology
close encounter
Rare Earth hypothesis
xenomythology
Tall White
substar
UFO religion
xenonatomy
ancient astronaut hypothesis
paleocontact hypothesis
sci-fier
star visitor
intergalactically
alienologist
Raëlism
ancient astronaut
xenophilia
biocosmic
astrozoology
xenozoology
exoconsciousness
rover
xenotheology
entity
Arecibo message
unearthliness
ufocal