Planet Guide and Information - Earth

Name
Earth
Distance from Sun (average)
150 million km
Diameter
12,756 km
Length of day
24 hours
Length of year
365 days
Mean surface temperature
15°C

Earth is the only planet where life of any kind has been proved to exist and more than 70% of its surface is covered by water. The type of life that has developed has been guided by many factors such as the temperatures on various land masses, the gaseous constituents in the atmosphere and the tilt of the Earth's axis which results in distinct seasons during the 365-day year.