EARTH

Average Distance From Sun 93 million miles (149.6 million km)   Mass 5.974 x1024 kg..   Diameter 7926 miles (12,756 km)   Length of Day 23 hrs. 56 mins. 4 secs.   Length of Year 365.2422 days Mean Surface Temperature 22* C Inclination to Axis 23.5 degrees Albedo 0.36 Escape Velocity 11.18 km/s   Known Moons 1

Earth is the only planet that is known for certain to contain living organisms. Liquid water covers more than two-thirds of the surface of the planet. Earth is the only planet known to currently experience plate tectonics; the ongoing shifting of earth's plates below the surface.