Across
- 3. A region in space with extremely strong gravitational pull
- 6. The vast expanse beyond Earth's atmosphere
- 9. A person who travels and works in space
- 11. The star at the center of our solar system
- 12. A vehicle propelled by engines that can travel into space
Down
- 1. A massive system of stars, dust, and gas held together by gravity
- 2. A celestial body that orbits around a star
- 4. The third planet from the Sun, where we live
- 5. A small object that burns up upon entering Earth's atmosphere
- 6. A bright, glowing ball of gas in space
- 7. Earth's natural satellite that orbits around it
- 8. An instrument used to observe distant objects in space
- 9. A creature from another planet or world
- 10. A celestial object made of ice and dust that orbits the Sun