Jupiter, the largest planet in our solar system, was named for the most important Roman god because of its size. About 1,300 Earths would fit into it. Viewed through a large telescope, Jupiter is stunningly colorful—it is a disk covered with bands of blue, brown, pink, red, orange, and yellow. Its most distinguishing feature is “the Great Red Spot,” an intense windstorm larger in size than Earth, which has continued for centuries without any signs of dying down.

Size: 11 times the diameter of EarthDiameter: 88,736 miles (142,800 km)Surface: A hot ball of gas and liquidAtmosphere: Whirling clouds of colored dust, hydrogen, helium, methane, water, and ammonia. The Great Red Spot is an intense windstorm larger than Earth.Temperature: –234°F (–148°C) averageRotation of its axis: 9 hours and 55 minutesRotation around the Sun: 12 Earth yearsYour weight: If you weigh 100 pounds on Earth, you would weigh 265 pounds on Jupiter.Distance from Earth: At its closest, 370 million miles (591 million km)Mean Distance from Sun: 483.88 million miles (778.3 million km)Satellites: 63Rings: 4

Fact Monster/Information Please® Database, © 2007 Pearson Education, Inc. All rights reserved.

The Planets   Jupiter - 44