Across
- 3. a space rock made of rock and metal that orbits in the asteroid belt
- 6. the other name for the 4 inner planets with a hard, rocky surface
- 8. Half of the Earth
Down
- 1. the other name for the 4 outer planets that are large and made of gas
- 2. a meteor that hits the ground of the Earth
- 4. a space rock of ice, rock, and dust that has a tail as it orbits the sun
- 5. a space rock that orbits a planet
- 7. an asteroid that burns up in Earth's atmosphere