Across
- 3. a small, rocky object that orbits the sun
- 5. National Aeronautics and Space Administration
- 7. a tool that allows astronomers to observe distant objects
- 8. a celestial body that orbits a star, has enough mass to be nearly round
- 9. seventh planet from the Sun.
- 11. scientific tests
Down
- 1. space rock that enters the earth
- 2. space travel
- 4. known as "red planet"
- 6. named after the Roman god of the sea.
- 10. A being from another planet