Vocabulary
Earth, Moon, and Sun The Solar System Stars, Galaxies, and the Universe
Autumnal Equinox
Axis Crescent Equinox Geosynchronous Orbit Gibbous Gravity Lunar Eclipse Orbit Penumbra Revoultion RotationSatellite Seasons Solar Eclipse Solstice Summer Solstice Tide Umbra Vernal Equinox Waning Waxing Winter Solstice |
Asteroid
Asteroid Belt Comet Ellipse Gas Giant Geocentric Gravity Heliocentric Inertia Meteor Meteorite Meteoroid Solar System Terrestrial Planets |
Big Bang Theory
Light Year Milky Way Observatory Probe Satellite Spectroscope Telescope Universe |