Vocabulary
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, solar system, nebular theory, Big Bang, gravity, shockwave, hydrogen, helium, nuclear, fusion, accretion disc, inner planets, outer planets, Milky Way Galaxy, meteorites, terrestrial planet, gaseous planet, gravity, mass, asteroids, repulsive, attractive, magnitude, weight, acceleration, orbit, gravity, mass, weight, force, non-contact force, gravitational constant, planets, moon, interior, exterior, orbit, solar system, nebular theory, Big Bang, gravity, shockwave, hydrogen, helium, nuclear, fusion, accretion disc, inner planets, outer planets, Milky Way Galaxy, meteorites, terrestrial planet, gaseous planet, gravity, mass, asteroids, repulsive, attractive, magnitude, weight, acceleration, orbit, gravity, mass, weight, force, non-contact force, gravitational constant, planets, moon, interior, exterior, orbit, gravity, mass, asteroids, repulsive, attractive, magnitude, weight, acceleration, orbit, gravity, mass, weight, force, non-contact force, gravitational constant, planets, moon, interior, exterior, orbit, gravity, mass, weight, force, non-contact force, gravitational constant, planets, moon, interior, exterior, orbit, planets, moon, interior, exterior, orbit, solar system, inner planets, rover, satellites, asteroid belt, dwarf planets, meteorites, telescope, gravitational force, orbit, comet, elliptical trajectory