Across
- 2. — A person trained to travel and work in space
- 7. — Known as the "Red Planet"
- 9. — A group of stars that forms a picture or shape
Down
- 1. — The invisible force that pulls things down and keeps planets in place
- 3. — A tool used to see faraway things, like stars and planets
- 4. — A vehicle astronauts use to travel among the stars
- 5. — A creature that might come from another planet
- 6. — The planet we live on
- 8. — A big round world that circles a star