meteoroids Definition

ejecta, comet, asteroids, magnetosphere, meteor, cosmic rays, meteorites, cosmic ray, exosphere, silicates, gamma rays, interstellar medium, photosphere, chondrules, lavas, jovian, craters, novae, particles, oort cloud, planetesimal, cosmic radiation, infrared radiation, iapetus, planets, moonlet, spherules, galaxies, neutron star, quasars, airglow, saturnian, syrtis major, nebulae, spacecraft, hypervelocity, milky way galaxy, magnetopause, omega centauri, photons, quadrantid, ionosphere, asteroid belt, chromosphere, aurorae, water vapor, pulsars, olivine, perihelion, interstellar space, muons, nucleosynthesis, neutrons, meteor shower, regolith, protons, pyroxene, supernovae, polarimetry, protostar, orbits, prominences, hydrosphere, gravitons, baryon, planetary nebula, plagioclase, epsilon aurigae, magmas, coronagraph, phyllosilicate, synchronous orbit, heliosphere, sunspots, alpha particle, hadrons, enceladus, radioactive decay, neutron radiation, lunar crater, perseids, planetoids, neutrino, astronomers, antiprotons, lithosphere, pions, spectroscopic analysis, orbiter, ballistic trajectory, taurid, antiparticles, heliopause, lapilli, antineutrinos, phaethon, pyroclastic, mesosphere, compressional, sundog,