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ππππππππππabsolute magnitudeAlcorAldebaranAlpha CentauriAltairAndromeda Galaxyapparent magnitudeArcturusasterismastronomerAstronomy (Wikipedia)
Astronomy is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth’s atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole.Big BangBig Dipperblack holeCaphcarbon starcelestial sphereconstellationCor CaroliDenebEarthEarth-Moon systemeclipseGalactic Centergalaxygalaxy filamentGiausargravityGreat AttractorGreat Red SpotHubble Space TelescopeinfinityJupiterKochabLangrenusLaniakea SuperclusterLocal BubbleLocal GroupLocal Interstellar CloudMare CrisiumMarsMegrezMercuryMilky WayMizarMoonNeptunenorthern celestial hemisphereobservable universeOdyssey (children’s magazine) (Wikipedia)Orion ArmPiscesβCetus Supercluster ComplexplanetPlanetary SciencePleiadesPlutoPolarisProxima CentauriSaturnsolar eclipseSolar Systemsouthern celestial hemispherestarstar chartstar logSummer TriangleSuntelescopeThubanuniverseUranusUrsa Major Moving GroupVegaVenusVirgo Supercluster