Earth is the only planet in the solar system not named after a Roman or Greek deity. The hottest recorded temperature is 136 degrees Fahrenheit. Scientists believe that Earth once had two moons. The longest mountain rang... More »

The one and only known home for life, Earth is one of the most interesting planets of the solar system. Life on Earth is extremely diverse; however, relative to Earth's size, all of life is contained within a very thin l... More »

One interesting fact about Earth is its status as the fifth planet in terms of size but the densest of all. It also ranks as the largest of the terrestrial planets in the solar system and the only one on which water exis... More »

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In the year 1515, Nicolaus Copernicus theorized that the Earth was a planet and discovered the idea of a heliocentric solar system, a system in which all planets revolved around the sun. He built his own observatory in 1... More »

Earth is the only planet in the solar system that is not named after a Greek or Roman god. Instead, the name Earth is derived from Old English and Germanic languages. More »

Earth is the only planet that has liquid water on its surface, it is 93 million miles from the sun, and the Atlantic Ocean is the saltiest of the oceans. Earth is a unique planet in the solar system. More »

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One interesting Earth fact that kids should know is that Earth is the only planet with an atmosphere that contains 21 percent oxygen. It is also the only planet known to contain life. The Earth is the third planet from t... More »