This is the only planet on which we know there is life. Earth is the third planet from the Sun. Earth has one moon. As seen from space, the Earth has a blue and white color. Earth has a strong magnetic field.
Earth has a nickel-iron core.
There is some volcanic activity on this planet. The Earth circles the Sun every 365 days. A day on Earth is 23 hours and 56 minutes long. Earth's diameter is 7,909 miles. Earth's average distance from the Sun is 93 million miles.