astronomical unit Definition

au, astronomy unit, light second, absolute magnitude, oort cloud, apolune, light year, apastron, arcsecond, inferior planet, intersidereal, minor planet, apocynthion, proxima centauri, standard candle, hubble law, heliometer, sidereal year, sidereal time, celestial sphere, inner planet, apparent magnitude, evection, binary star, andromeda galaxy, giant planet, major planet, celestial equator, electronvolt, binary system, sidereal day, nebula, interplanetary space, apojove, astronomical year, superior planet, circumjovial, equinoctial circle, white dwarf, planetary nebula, extraterrestrial object, radio galaxy, arcminute, beta centauri, mev, triangulum australe, spiral nebula, cosmic background radiation, metric linear unit, aphelion, photosphere, solar telescope, solar year, proper motion, milky way galaxy, semidiameter, gravitational field, femtometer, neutron star, spiral galaxy, multiple star, almucantar, dipole moment, gravitational force, orbital plane, redshift, small magellanic cloud, sidereal, solar day, celestial point, hubble constant, protoplanetary, acronycal, crab nebula, tropical year, radio astronomer, antiscian, chromatoscope, gravitational interaction, lacertid, equinoctial point, magellanic cloud, summer triangle, geocorona, interstellar space, mesoseme, ecliptic, star chart, perihelion, asteroid belt, delta ray, quantum number, synchronous orbit, electron shell, firmamental, heliometry, astrobleme, mu meson, minute of arc, galaxy,