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1 Orbit of Sun
365.3 Days
1 Rotation
23 hours 56 Mins
6,000,000,000,000,000,000,000,000 kg
1,097,509,500,000,000,000,000 cubic meters
Escape Velocity
67,578 km/h (25,000 mph)
Distance From Sun
150 million kilometers (93 million miles)
Average Temperature
7.2°C (45°F)
Nitrogen, Oxygen, Argon
12,755 kilometers (7,926 miles)

Did you know?

Scientists use the Earth to study all the other planets. Since no human has ever visited another planet, we have to use what we know about the Earth, and try to guess what the other planets must be like. This is called Comparative Planetology.

Earth means:


In astronomy mythology, her Greek name was Gaea. Earth was the mother of the mountains, valleys, streams and all other land formations. She was married to Uranus.

How Big is the Earth?

The Earth is the biggest of all the terrestrial planets. A terrestrial planet is a dense planet found in the inner Solar System. The diameter of Earth is 7,926 miles. The circumference measured around the equator is 24,901 miles. There are currently almost 7 billion people living on the Earth. About 30% of the Earth’s surface is covered with land, while about 70% is covered by oceans.


The Planet

Our planet is an oasis of life in an otherwise desolate universe.  The Earth’s temperature, weather, atmosphere and many other factors are just right to keep us alive.To learn more about Earth, please visit our Earth Sciences website.



The Earth has one moon.  Its name is Luna.  To learn about Luna Click Here.