类别 全部 - atmosphere - distance - rotation - magnetic

作者:Mindomo Team 1 年以前

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Facts About Planet Earth

Earth, our home planet, boasts a variety of fascinating characteristics. It's endowed with a magnetic field thanks to its iron core, which protects us from harmful solar radiation. The planet completes one rotation approximately every 23.

Facts About Planet Earth

Facts About Planet Earth

Almost a perfect sphere.

Rotates once every 23.934 hours.

Tilt of axis is 23.4 degrees.

Has a magnetic field due to iron core.

Earth is 91 million miles away from the sun.

Atmosphere is 78% nitrogen and 21% oxygen.

Diameter is 7,926 miles.

Age is 4.5 billion years old.