spiral nebula Definition

spiral galaxy, planetary nebula, nebula, white dwarf, minor planet, andromeda galaxy, magellanic cloud, oort cloud, binary star, crab nebula, small magellanic cloud, supernova, large magellanic cloud, quasar, gravitational interaction, neutron star, giant planet, collapsar, galilean satellite, milky way galaxy, gravitational collapse, galaxy, major planet, lacertid, metagalaxy, extraterrestrial object, proxima centauri, hubble law, protogalaxy, terrestrial planet, cosmic background radiation, star chart, little bear, zodiacal light, gravitational force, absolute magnitude, astronomer, cepheid variable, giant star, inferior planet, radio galaxy, radio astronomer, multiple star, celestial sphere, binary system, nubecula, corona australis, intersidereal, triangulum australe, intragalactic, gravitational field, celestial body, redshift, solar flare, chromatoscope, gauge boson, coma berenices, hubble, solar telescope, supermassive, ursa minor, light year, uranography, alpha centauri, extragalactic, interstellar space, cometology, inner planet, proper motion, fundamental particle, weak force, uranoscopy, gamma ray, astrosphere, superior planet, comet, circumjovial, evection, summer triangle, color force, outer planet, corona borealis, dwarf star, stelliform, galactic, lunar crater, interplanetary space, strong force, cometographer, extrasolar, hubble constant, gravitational, light second, great bear, canis major, asteroid belt, telespectroscope, meteoromancy, astrophobia, astrobleme,