perseids Definition

meteors, meteor shower, lunar eclipse, vernal equinox, spring equinox, annular eclipse, autumnal equinox, earthshine, zodiacal light, occultation, quadrantid, celestial equator, aurora borealis, comet, pleiades, summer solstice, asterism, perihelion, milky way galaxy, ecliptic, andromeda galaxy, planetary nebula, oort cloud, neutron star, aurorae, solar eclipse, coma berenices, canis major, mimas, phaethon, equinox, moonset, stargaze, celestial sphere, equinoxes, sunspots, ursa minor, moonrise, epsilon aurigae, perigee, nebulae, sunrises, moons, aphelion, constellations, taurid, meteoroids, astronomers, partial eclipse, quasars, solstice, supernovae, novae, betelgeuse, omega centauri, galaxies, stargazers, orbits, prominences, algol, radial velocity, telescopes, corot, exoplanet, winter solstice, cosmic rays, photosphere, umbral, proxima centauri, canes venatici, syrtis major, triangulum, planets, weatherwise, nebulosity, puppis, redshift, pulsars, eclipsing binary, enceladus, moonlet, flyby, noctilucent, sidereal, starlight, baryons, cosmic microwave background, observatories, photometry, eruptions, airglow, hummingbird moth, suns, saturnian, nightglow, candlemas day, masers, eridanus, cosmic ray, heliopause,