Across
- 1. planet with two moons
- 5. an instrument used to look at stars
- 6. the number of planets in our solar system
- 7. Neil Armstrong was the first person to walk the ...
- 8. the hottest planet
Down
- 2. a person who travels in space...
- 3. the furthest planet from the sun
- 4. the closest planet to the sun
- 7. the red planet