This document provides a brief summary of the planets in our solar system. It describes the key features of each planet from Mercury to Neptune, including their position from the Sun, size, composition and notable characteristics. Mercury is the smallest and closest planet to the Sun with a thin atmosphere. Venus has a dense, greenhouse atmosphere that makes it the hottest planet. Earth is the only known planet that supports life. Mars is known as the Red Planet due to its iron oxide surface. Jupiter is the largest planet and has the Great Red Spot storm. Saturn is notable for its beautiful ice rings. Uranus was the first planet discovered with a telescope. Neptune has very strong supersonic winds and is an ice giant.