orionis Definition

cepheus, beta centauri, eridanus, epsilon, hydrae, betelgeuse, coma berenices, tauri, aurigae, corona borealis, nebula, trifid, planetary nebula, triangulum, canis major, cassiopeia, small magellanic cloud, large magellanic cloud, arcturus, puppis, asterism, cygni, protostar, cepheid variable, proxima centauri, scorpius, omicron, circinus, quasar, nebulosity, corona australis, deneb, lyrae, eclipsing binary, fornax, fomalhaut, spiral galaxy, baryon, crucis, coronagraph, chromosphere, dipolar, camelopardalis, serpens, capricornus, jovian, luminosities, photometer, chondrites, syrtis major, quadrantid, phaethon, omega centauri, corot, strange quark, arae, sundog, canes venatici, horsehead nebula, epsilon aurigae, rho, photosphere, valence electron, gravitational interaction, porphyrin, meson, heliopause, airglow, ejecta, pion, epimetheus, moonlet, transferase, planitia, photolysis, celestial sphere, ellipsoid, hydrus, charm quark, auroral, kev, lapilli, arcsecond, photoluminescence, cherenkov, achernar, taurid, elegans, planetesimal, hydrogenase, quasiparticle, magnetization, lucida, exosphere, photoelectron, magnetoresistance, remanent, cyano, parsec, uranian,