Across
- 1. A vehicle designed for travel or operation in outer space
- 4. A small piece of rock or metal that burns up in Earth's atmosphere
- 6. All of space and everything in it
- 8. A natural satellite that orbits a planet
- 9. A massive system of stars, gas, and dust held together by gravity
- 11. An object that orbits a planet or a star
- 12. The path an object takes as it revolves around another object
- 13. The force that attracts objects toward each other
- 14. A person who travels and works in space
- 15. A celestial object made of ice and dust that orbits the Sun
- 16. A vehicle designed to propel itself through space
Down
- 2. A scientist who studies celestial objects and phenomena
- 3. A celestial body that orbits a star and is not a moon
- 5. response
- 7. system A system that includes a star and all the objects that orbit it
- 10. An instrument used to observe distant objects in space
- 11. A large, glowing ball of gas in space