Across
- 2. the only planet known to have life.
- 6. also known as fly-by,collects data.
- 8. reusable spacecrafts.
- 9. a robot designed to travel on the surface of a planet.
- 10. launched the first people into space.
Down
- 1. has to do with the moon
- 3. the study of life in the universe including extraterrestrial life
- 4. any small object that orbits another.
- 5. launches its self into space by using gases.
- 7. person who goes to space in a rocket.