Across
- 1. Extremely dense object with gravity so strong that nothing can escape it, not even light.
- 4. The smallest planet in our solar system.
- 5. The largest planet in our solar system.
- 6. Used to be considered a planet of our solar system.
- 7. Combination of everything - it includes all of space, its' matter and energy.
- 11. A huge collection of stars, gas, and dust that are held together by gravity.
- 12. Earths' natural satellite.
- 13. The seventh planet from the Sun.
- 14. An independent agency of the U.S. government responsible for space research.
Down
- 2. The planet that dogs inhabit.
- 3. The planet furthest away from the Sun.
- 4. Often referred to as "The Red Planet".
- 8. The hottest planet in our solar system.
- 9. A natural body visible in the sky, especially at night that gives off light or shines by reflection.
- 10. The planet with its' signature rings.