Vocabulary
big bang theory, nebular theory, solar nebula, supernova, protoplanetary disk, nuclear fusion, accretion, planetissmals, gravity, red giant, white dwarf, solar system, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, comets, moons, meteoroids, asteroids, dwarf planet, gravity, orbit, telescopes, orbiters, landers, tides,, , planetesimal, planet, star, sun, nebula, red giant, white dwarf, gravity, solar system, planets, inner planet, gas giants, asteroids, comets, sun, hydrogen, helium, planets, moon, interior, exterior, orbit, moons, solar system, sun, planets, meteorites, asteroids, dwarf planets, comets, Venus, Earth, circumstellar disk, orbits, Mars, Jupiter, asteroid belt, Saturn, Mercury, Neptune, Uranus, Ceres, satellites, meteor belt, gravity, elliptical orbit, inertia, celestial bodies, comets, meteor, meteoroid, methane, Rigel, space orbiter, rattan, sulfuric acid, carbon dioxide, space orbiters, dwarf planet, comets, asteroids, gravity, velocity, orbital, lander, rover, telescope, ocular, finderscope, tripod, solar system, asteroid belt, gravity
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