Cynthian
anagalactic
asteroidal
astral
astrologic
astrologistic
astrologous
astronomic
astrophysical
celestial
circumplanetary
cislunar
empyreal
empyrean
equinoctial
extragalactic
galactic
heavenly
heliacal
intercosmic
intersidereal
interstellar
lunar
lunary
lunate
lunular
lunulate
meteoric
meteoritic
nebular
nebulose
nebulous
planetal
planetarian
planetary
planetesimal
semilunar
sidereal
solar
sphery
star-spangled
star-studded
starry
stellar
stellary
terrestrial
uranic
zodiacal
aerial
deep space
exploratory
faster-than-light
full-scale
ill-fated
intercontinental
intergalactic
long-distance
long-range
maritime
oceangoing
one-man
one-way
orbital
outbound
round-the-world
suborbital
transatlantic
unman
unsanitary