andromeda galaxy Definition

milky way galaxy, galaxy, spiral galaxy, nebula, large magellanic cloud, oort cloud, planetary nebula, proxima centauri, small magellanic cloud, quasar, neutron star, celestial sphere, triangulum, gravitational interaction, galactic, planetoid, alpha centauri, comet, betelgeuse, redshift, zodiacal light, asteroid belt, exoplanet, extragalactic, canis major, gravitationally, coma berenices, gamma ray, celestial equator, planets, omega centauri, eclipsing binary, supernovae, moonlet, protostar, epsilon aurigae, pulsar, circumstellar, mimas, tarantula nebula, fainter, photosphere, syrtis major, jovian, asteroids, orbits, iapetus, puppis, trifid, asterism, nebulosity, heliosphere, monoceros, fomalhaut, horsehead nebula, radial velocity, astronomers, novae, serpens, cosmos, aurorae, ejecta, moons, magnetosphere, gamma rays, saturnian, baryon, corona, canes venatici, enceladus, luminosities, heliopause, cepheus, phobos, arcsecond, occulted, ecliptic, telescope, harlow shapley, pleiades, gravitational attraction, epimetheus, spectroscopically, suns, chromosphere, universe, corot, eridanus, parsec, orb, cosmic microwave background, exosphere, capricornus, airglow, neutrino, cosmic, sundog, gibbous, coronagraph, earthshine,