Across
- 1. – A massive system of stars, like the Milky Way
- 4. – Earth's natural satellite
- 6. – Another word for the universe
- 10. – Massive balls of burning gas in space
- 11. – The name of our galaxy
- 12. – Earth is one
- 16. – A vehicle that launches into space
- 17. – A celestial body with a tail of gas and dust
- 18. – U.S. space agency
- 20. – Worn by astronauts for protection
- 21. – A device or moon orbiting a planet
- 22. – NASA’s famous moon mission program
- 23. – First name of the first man on the Moon
Down
- 2. – A person trained to travel in space
- 3. – All space and everything in it
- 5. – The path an object takes around another
- 7. – Related to the sun
- 8. – Second planet from the sun
- 9. – A region with gravity so strong, not even light escapes
- 13. – Tool to observe distant space objects
- 14. – Force that keeps us grounded
- 15. – Known as the Red Planet
- 19. – What rockets do from a pad