Across
- 5. Known as the "Red Planet."
- 6. An object that orbits a planet; it can be natural or man-made.
- 9. A giant cloud of gas and dust in space.
- 11. Everything that exists, including all space, matter, and energy.
- 12. A natural satellite that orbits a planet.
- 13. A vehicle used to travel into space.
- 14. The path an object follows around another object in space.
- 15. The largest planet in our solar system.
- 17. The hottest planet in our solar system.
- 18. A huge collection of stars, gas, and dust held together by gravity.
Down
- 1. The force that attracts objects toward each other.
- 2. A tool used to observe distant objects in space.
- 3. A streak of light caused by a space rock burning in Earth's atmosphere.
- 4. A rocky object that orbits the Sun.
- 6. The planet famous for its rings.
- 7. An icy object that develops a glowing tail when near the Sun.
- 8. The star at the center of our solar system.
- 10. An event when one celestial body blocks another.
- 16. A large object that orbits a star.