Size: Four planets in our solar system are larger and four are smaller than EarthDiameter: 7,926.2 miles (12,756 km)Surface: Earth is made up of water (70%), air, and solid ground. It appears to be the only planet with waterAtmosphere: Nitrogen (78%), oxygen (21%), other gasesRotation of its axis: 23 hours, 56 minutes, 4 secondsRotation around the Sun: 365.2 daysSatellites: 1Mean Distance from Sun: 92.9 million miles (149.6 million km)Rings: 0
Fact Monster/Information Please® Database, © 2007 Pearson Education, Inc. All rights reserved.