Solar System and Space Vocabulary PowerPoint. All about the solar system and vocabulary words needed for understanding the solar system. Vocabulary terms include astronomer, telescope, observations, constellation, solar system, orbit, revolution, spin, rotation, moon phase, full moon, new moon, waxing crescent, waning crescent, waxing gibbous, waning gibbous. Also includes descriptions of the various celestial bodies of the solar system including the sun, the terrestrial planets, the asteroid be