Across
- 2. Earth's only natural satellite
- 8. The piece of equipment someone might use to look at stars
- 9. The name of someone who travels into space
Down
- 1. This planet has a moon called Triton
- 2. The red planet
- 3. The study of the universe
- 4. The name of our galaxy
- 5. A big ball of dirty ice and snow in outer space
- 6. The planet closest to the Sun
- 7. The largest planet in the solar system