Across
- 4. A large, glowing ball of gas that produces heat and light.
- 7. An object that orbits around a planet or other celestial body.
- 8. A person who travels and works in space.
- 9. An instrument used to observe distant objects in space.
- 10. System The system consisting of the Sun and the planets and other objects that orbit around it.
- 12. A celestial object consisting of a nucleus of ice and dust that becomes luminous when passing close to the Sun.
- 13. A natural satellite that orbits around a planet.
- 14. A vehicle that is propelled by engines to travel through space.
Down
- 1. The path followed by an object as it revolves around another object.
- 2. A large object that orbits around a star, such as the Sun, and does not produce its own light.
- 3. All of space and everything in it, including stars, planets, galaxies, and other matter and energy.
- 5. A large system of stars, dust, and gas held together by gravitational forces.
- 6. A small particle from outer space that enters the Earth's atmosphere and burns up, creating a streak of light.
- 7. A vehicle designed for travel or operation in outer space.
- 11. A scientist who studies the stars, planets, and other objects in space.