UNIT 1.- The Earth in the Universe
 
 The Solar System
 
    The Sun
     Mercury
     Venus
     Earth
     Mars
     Jupiter
     Saturn
     Uranus
     Neptune
     Pluto
     Ceres
     Moon
     Asteroids
     Comets
The outer giants

Uranus is the seventh planet from the sun. It is 1 billion, 783 million miles from the Sun. Uranus is more than 19 times farther from the Sun than Earth is. It is so far away from the sun that light takes two hours and forty minutes to get there! Uranus is so far from the sun that it is very, very cold.

Uranus is a gas giant with a rocky center. It does not have a solid surface. It is the third largest planet. It is about four times bigger than Earth. It has 27 moons. Uranus looks blue-green. A thick haze covers the planet. Uranus is a sideways planet!.

 

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.

 Images
   

Uranus and its rings

 

Neptune