astronomical (adj.)
- abysmal
- asteroidal
- astral
- astronomic
- astrophysical
- awesome
- boundless
- bulky
- celestial
- cislunar
- colossal
- cosmic
- elephantine
- empyreal
- empyrean
- enormous
- epic
- equinoctial
- extensive
- extragalactic
- galactic
- giant
- gigantic
- heavenly
- heliacal
- heroic
- huge
- immeasurable
- immense
- infinite
- interplanetary
- interstellar
- jumbo
- king-size
- large
- lunar
- lunary
- lunate
- mammoth
- massive
- meteoric
- meteoritic
- mighty
- monstrous
- monumental
- mountainous
- nebular
- nebulose
- nebulous
- outsize
- overgrown
- planetal
- planetary
- prodigious
- profound
- semilunar
- sidereal
- sizable
- solar
- spacious
- starry
- stellar
- stupendous
- terrestrial
- titanic
- towering
- tremendous
- uranic
- vast
- voluminous
- weighty
- zodiacal
