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Neptune
is the eighth and last real planet in our solar system. It is 2
billion, 795 million miles from the sun. That's about thirty times
Earth's distance from the Sun. It is the fourth-largest planet. It
is the smallest of the gas giant planets, but it is about four times
larger than Earth.
Its
gravity is greater than Earth's gravity. If you weigh 100 pounds on
Earth, you would weigh 110 pounds on Neptune. Neptune does not have
a solid surface. It is a giant ball of gas with a center of rock and
iron. It looks blue-green and is covered with clouds. Neptune,
because of its bluish color, was named for the Roman god of the sea. |