eclipsing binary, asterism, camelopardalis, cepheid variable, epsilon aurigae, arcturus, cepheus, pleiades, scorpius, celestial sphere, canis major, triangulum, cassiopeia, achernar, hyades, proxima centauri, cygni, ecliptic, sidereal, astrometry, photometry, beta centauri, puppis, aurigae, perihelion, corot, omega centauri, deneb, capricornus, novae, hipparchus, venusian, protostar, periodicities, andromeda galaxy, monoceros, canes venatici, planetoid, celestial equator, constellations, lyrae, denebola, occultation, hubble, uranian, redshift, extragalactic, eridanus, radial velocity, luminosities, nebulae, ophiuchus, arcsecond, azimuthal, equinoxes, perseids, aurora, longitudes, phaethon, tycho brahe, epimetheus, mizar, photosphere, obscuration, jovian, orbits, planetary nebula, earthshine, betelgeuse, solstices, procyon, aphelion, bootes, vorticity, parsec, minkowski, zodiacal light, johannes kepler, small magellanic cloud, ursa minor, horsehead nebula, meteor shower, milky way galaxy, perigee, uranus, umbral, planets, alpha centauri, edmond halley, mimas, leonhard euler, saturnian, nebulosity, astrolabe, prograde, chromosphere, binary, exoplanet, moonlet, irradiance, celestial mechanics, supernovae, ems, internet, ur, abstract, bayes, bi, ci, circular, dimensionality, first, gay, martial, pascal, plus, semantic, sql, super, thesaurus, vp, \u00bb, fortran, code, compiler, multiprocessor, object, purpose, untyped, 80, antiquated, compatible, compliant, declarative, featured, fee, generalpurpose, geometry, instrumented, level, lisp, macro

algebraic language, binary star, double star