The document describes the 8 planets in our solar system. It provides key details about each planet such as their distance from the sun, mass, radius, orbital period, and notable moons. The sun is at the center of the solar system and is a hot ball of plasma that is much larger than the other planets. Moving outward from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune - ranging dramatically in size from Mercury being the smallest to Jupiter being over 300 times the mass of Earth and two and a half times the mass of all other planets combined.