Across
- 3. A system of millions or billions of stars, dust, and gas held together by gravity.
- 6. Station A large spacecraft where astronauts live and work for an extended period."
- 7. A person trained to travel and work in space.
- 10. An instrument used to observe distant objects in space.
- 11. A massive, bright celestial object in space.
- 13. A small rocky object that orbits the Sun.
- 14. A small icy object that orbits the Sun.
Down
- 1. All of space and everything in it.
- 2. A large object that orbits a star.
- 4. Hole An area in space with gravity so strong that nothing, not even light, can escape it.
- 5. A vehicle designed for travel in outer space.
- 6. An object placed in orbit around the Earth or other celestial bodies.
- 8. A small rock or metal object entering the Earth's atmosphere, producing a streak of light.
- 9. A natural satellite that orbits a planet.
- 12. A vehicle that launches satellites and spacecraft into space.