Across
- 5. The ____ is between Mars and Jupiter.
- 7. A cosmic "snowball" made of ice, gas, rock, and dust, that has a "tail".
- 8. oval shaped
- 10. The center of the solar system, in which all planets, asteroids, etc. orbit it. It is the largest star in the solar system.
- 11. The ____ is a belt of asteroids that is beyond Neptune, its diameter is approximately 100 AU.
- 12. An object's revolution around another object.
Down
- 1. A unit of measure used to measure astronomical distances; it is 92,955,807.3 miles.
- 2. The ____ is similar to the Kuiper and Asteroid Belts, but it is 50,000 AU away from the sun and the farthest reaches are 100,000 AU away from the sun.
- 3. An asteroid that has entered Earth's gravitational force and is also in the atmosphere, in which it will fall and crash on Earth's surface.
- 4. An asteroid that has entered Earth's gravitational force.
- 6. The galaxy that Earth is in.
- 9. A piece of rock "left over" from the formation of the solar system; it stays in orbit around the sun.