Across
- 4. Planet known for it's rings
- 6. An asteroid on a collision course with Earth
- 8. satellite The International Space Station and Sputnik are examples of ________
- 12. An rock in space
- 13. Closest planet to the sun
- 14. Earth's sister planet
- 16. planet This celestial body is too small to be considered to be a planet
- 17. Solar system's only star
Down
- 1. A ________ is a form of celestial body orbiting the sun
- 2. Considered a planet until 2006
- 3. satellite The moon is one of the solar system's _______
- 5. system The ___________ is the sun and everything that orbits it
- 6. a meteor that does not burn up in the Earth's atmosphere
- 7. The largest planet in the solar system
- 9. The only planet that orbits sideways
- 10. Planet with the fastest winds in the solar system
- 11. Earth's only natural satellite
- 13. Planet with an average temperature of -55 degrees Celsius
- 15. The only planet that can support life