The document describes the eight planets in our solar system - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. It provides key details about each planet, identifying Mercury, Venus, Earth and Mars as the inner, rocky planets and Jupiter, Saturn, Uranus and Neptune as the outer, gas giant planets. It also briefly summarizes information about the Sun and Moon, noting that the Sun is a huge star of hot flaming gas at the center of our solar system and that the Moon has a rocky surface with craters and revolves around Earth as its natural satellite.