Across
- 3. people that are in space
- 6. the first man on the moon
- 9. something that used to be a planet
- 10. it has planets, stars and moons
- 14. it's in the scienceworks
- 17. you see it in the sky at night
Down
- 1. it's the closest planet to the sun
- 2. He discovered the sun spots and solar flares
- 4. is the coldest planet in the solar system
- 5. it is one of the gas giants
- 7. there is lots of them
- 8. it takes 27 days to orbit the earth
- 11. it keeps us alive
- 12. you use it to look up in the stars at night
- 13. it's something we live on
- 15. the first dog on moon
- 16. one of jupiter's moon has water