Earth is the only planet known to have liquid water. More than 70% of its surface is covered with water. Earth is nicknamed the "blue planet" because, from space, all its water makes the planet appear blue.

On Earth, the average time between one sunrise and the next is 23 hours and 59 minutes. It takes Earth 365.25 days to orbit the Sun.

The 0.25 day of the year is counted after every four years on the 29th of February. This is why a leap year occurs.

	Facts About Earth
	Rotational Period: 23 hours 56 minutes
	Volume (Earth=1): 1
	Density (Water=1): 5.52
	Temperature at surface: -70�C to +55�C

	Earth Statistics
	Distance from the sun: 149.6 mkm
	Orbital velocity: 29.79 km/s
	Year length: 365.256 Earth-days
	Diameter: 12,756 km
	Mass: 1.0 Earth-mass
	Satellites: 1

Link To Other Planet

Runa Jesmin

Last revised: 20 September 1999

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