Across
- 2. gives us our yearly seasons
- 5. lowest layer of the atmosphere of Earth
- 7. 11 expedition that made Neil Armstrong the first man on the moon
- 10. Jupiter's largest moon
- 11. our galaxy
- 12. stars form through a process called
- 14. temperature, humidity, precipitation, wind speed and direction
- 15. natural satellite
Down
- 1. constantly moving and colliding
- 3. a type of galaxy
- 4. group of stars
- 6. the milky way is a ___ galaxy
- 8. made up of gas, dust and ice
- 9. an inner planet
- 13. how many planets are in our solar system?