Simple Online Photographic Dictionary

a visual dictionary that can be used as a children's picture dictionary,
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Earth


Earth is the only planet in our solar system known to have life. It is the third planet from the sun. Earth is mostly covered in water. The Earth has one moon.

The Earth is 149,597,890km from the Sun.

Its radius is 6,378.14 km.

Image sourced from NASA/JPL-Caltech