Across
- 3. The largest planet in the solar system.
- 5. The ____ belt is located between Mars and Jupiter.
- 7. The closest planet to the Sun, and it is also the hottest.
- 8. The time it takes a planet to rotate on its _____ is equal to a day on that planet.
- 10. The seventh planet from the Sun.
- 12. This planet takes the longest to travel around the Sun.
- 15. This lasts 365 days on the Earth.
- 16. These objects are believed to be left over from the beginning of the solar system.
- 17. The path the planets take when traveling around the Sun.
- 18. The Earth has one, but other planets have many of them.
- 19. This planet takes about the same time as the Earth to rotate on its axis one time.
Down
- 1. The beginning of the solar system was about 4.6 _______ years ago.
- 2. The galaxy our solar system is located.
- 4. This planet has the longest day, taking 243 Earth days to rotate one time.
- 6. The Sun and the objects that travel around it.
- 9. It is the closest star to Earth made up of mostly helium and hydrogen.
- 11. The planet famous for its many rings.
- 13. This planet is inhabited by people, 93 million miles from the Sun.
- 14. The total number of planets.