Across
- 4. the most distant planet that can be seen with the naked eye.
- 7. known as the "Red Planet".
- 8. the largest planet in the universe.
- 9. takes approximately 365 days to orbit the sun.
Down
- 1. was the first planet found using a telescope.
- 2. is hotter than Mercury despite being further away from the Sun.
- 3. the energy created is nuclear fusion.
- 5. The Coldest Planet in the Solar System.
- 6. no longer officially considered a planet.
- 7. closest planet to the sun.