Vocabulary
, orbits, solar system, galaxy, patterns, revolution, rotation, solar system, gravity, revolution, equator, southern hemisphere, northern hemisphere, solstice, equinox, eclipse, umbra, penumbra,, lunar phase, gibbous, waxing, waning, lunar phase, orbit, rotate, revolve, phases of the moon, spring tide, neap tide, gravity, season, lunar eclipse, solar eclipse, tilt, axis of rotation, plane of orbit, obliquity, solstice, equinox, umbra, antumbra, annular eclipse, rotation, revolution, model, waxing, waning, gibbous, crescent, phases, new moon, waning gibbous, waxing gibbous, waning crescent, waxing crescent, first quarter, last (third) quarter, new moon, full moon, autumn, spring, summer, winter, Northern Hemisphere, Southern Hemisphere, equator, solar system, planets, inner planet, gas giants, asteroids, comets, sun, hydrogen, helium, gibbous, lunar phases, satellite, waxing, waning, asteroid, elliptical