Vocabulary
sun, star, solar system, plasma, galaxy, orbit, atmosphere, satellite, moon, diameter, rotation, lunar surface, axis, day, night, North pole, South pole, phases of the moon, last quarter, waning gibbous, waxing gibbous, waning crescent, waxing crescent, full moon, new moon, solar system, galaxy, universe, space, star, red giant star, supergiant, supernova, blue hypergiant, orange giant, Sun, Earth, moon, planet, light-year, light-speed, telescope, hydrogen, gas, sphere, astronomer, galaxy, solar system, stars, revolution, year, constellations, telescope, The Big Dipper, Ursa Major, atmosphere, shadow, east, west, tides, moon's gravity, orbit, month, crescent, tidal lock, phase, Virgo, Sagittarius, Scorpio, Libra, Leo, Cancer, Gemini, Taurus, Aries, Pisces, Aquarius, Capricorn, rotation, revolution, model, waxing, waning, gibbous, crescent, phases, new moon