Across
- 3. The solar system we live in
- 5. A spacecraft that orbits planets
- 6. The planet we live on
- 7. A meteor that survives its passage through a planet's or moon's atmosphere
Down
- 1. A collection of 8 planets
- 2. A region of space that sucks in matter
- 4. Asteroids orbit around or within the ____
- 5. The first satellite successfully launched in space
- 7. Orbits around planets