The Solar System

2. objects made of ice, dust, and rock that have long orbits around the sun
3. the planet in our solar system that rotates at about 90 degrees from vertical
4. the planet closest in size to earth in our solar system
5. a ball of hot gas, mostly hydrogen and helium
6. consists of the sun, the planets, their moons, and a variety of smaller objects
9. a round object in space that orbits a sun, but does not have a clear orbit
10. the furthest planet in our solar system
12. the unit used to measure distances in the solar system
15. the smallest planet in our solar system
16. the planet who's orbit takes about twice the amount of time as earth's
17. very small chunks of rock and dust that form when asteroids or comets break apart
18. an object that orbits a planet

1. the first four planets in the solar system, also called the inner planets
7. a round object in space that orbits a sun and has a clear orbit
8. the planet with the most visible rings in our solar system
11. the last four planets in the solar system, also called the outer planets
12. a region of the solar system between Mars and Jupiter that contains many small, rocky objects
13. small, irregularly shaped, rocky objects that orbit the sun
14. the largest planet in our solar system