The Solar System

1. Unit 1 E The Solar System

2. 5. The Outer Planets

3. The five (5) planets farthest from the sun are called the outer planets Vocabulary Outer planets The five planets farthest from the sun: Jupiter, Saturn, Uranus, Neptune, and Pluto

4. Jupiter is the fifth planet in the solar system and is the largest A day on Jupiter is less than 10 hours but it takes Jupiter 12 Earth years to orbit the sun once

5. Jupiter is surrounded by thick clouds of gas Most scientists believe that liquid lies under the clouds

6. Saturn is the sixth planet from the sun It is the second largest planet in the solar system

7. Saturn is surrounded by shiny rings that make it very colorful It takes almost 30 Earth years for Saturn to make one orbit around the sun

8. Saturn has at least 58 moons

9. Uranus is the seventh planet from the sun Uranus also has rings surrounding it

10. The rings are formed by an unknown black material which may be black carbon coating the rings of methane gas It takes Uranus 84 years to orbit once around the sun

11. Scientists discovered Neptune and Pluto by using mathematics Although scientists are no longer calling Pluto a planet, we will still include it

12. Neptune is the eighth planet from the sun It takes Neptune about 165 years to orbit the sun one time

13. Neptune is covered with a thick layer of icy clouds The interior of Neptune may be a central rocky core

14. Pluto is the farthest planet from the sun and the one we know the least about From Pluto, the sun would probably look like a distant star