Across
- 1. The planet known as the Red Planet
- 4. A place where astronauts live and work in space
- 5. The force that keeps us on the ground
- 7. A scientist who studies space
- 9. A giant group of stars, dust, and gas
- 11. A vehicle that travels into space
- 14. A tool scientists use to see faraway objects in space
- 17. A massive cloud of dust and gases where new stars are born.
Down
- 1. The closest planet to the Sun
- 2. A machine that helps us explore other planets
- 3. The fastest thing in the universe
- 6. Earth’s natural satellite
- 8. What astronauts wear to survive in space
- 10. A person trained to travel in space
- 12. The layer of gases around Earth
- 13. A rocky object that falls to Earth from space
- 15. The path a planet takes around a star
- 16. The star at the center of our solar system