betelgeuse Definition

alpha orionis, nebula, andromeda galaxy, planetary nebula, supernova, milky way galaxy, coma berenices, proxima centauri, asterism, fomalhaut, spiral galaxy, triangulum, large magellanic cloud, canis major, celestial equator, quasar, arcturus, galaxy, pleiades, corona borealis, small magellanic cloud, supergiant, deneb, aldebaran, ursa minor, constellation, alpha centauri, cepheid variable, celestial sphere, zodiacal light, neutron star, cassiopeia, canis minor, planetoid, beta centauri, exoplanet, hyades, photosphere, meteor shower, puppis, protostar, omega centauri, monoceros, epsilon aurigae, eridanus, redshift, eclipsing binary, camelopardalis, cepheus, scorpius, capricornus, novae, syrtis major, canes venatici, planets, aurigae, corot, serpens, tarantula nebula, lyrae, trifid, orbits, uranus, cygni, mimas, occultation, coronagraph, radial velocity, orionis, sunspot, pulsar, comet, aurorae, luminosities, suns, baryon, achernar, perihelion, airglow, ejecta, chromosphere, moonlet, perigee, gamma rays, ecliptic, parsecs, epimetheus, heliopause, earthshine, heliosphere, antiparticle, moons, jovian, mesosphere, aphelion, masers, exosphere, perseids, horsehead nebula, interstellar medium,