Across
- 2. – A space object made of ice, dust, and gas that forms a tail when near the sun.
- 5. – A huge system of stars, gas, and dust bound together by gravity.
- 6. – A person who travels to space.
- 7. – The path one object takes around another in space.
- 8. – A vehicle used for traveling beyond Earth's atmosphere.
Down
- 1. – The force that keeps planets in orbit around the sun.
- 3. – An instrument used to observe distant objects in space.
- 4. – A large body in space that orbits a star.
- 9. – The star at the center of our solar system.