Across
- 1. solar ______ is the arm of the Sun after an explosion
- 4. it takes a _____ to go around the sun
- 5. the first planet
- 10. Earth spinning on its axis
- 11. a UFO
- 12. to go around
- 13. a star that gives heat and light
- 15. a person trained to go to space
- 16. a group of stars that make a picture
- 17. orbits around the Earth
Down
- 2. a rock or ice that flies fast
- 3. winter, fall, spring, summer
- 6. Earth going around the sun
- 7. takes pictures and communicates with Earth
- 8. a body that orbits around the Sun
- 9. the line going from North to South
- 14. the opposite of night