Across
- 3. police car and ambulance lights do this
- 6. to see for a long time
- 8. the sun ______
- 11. having no light
- 12. when it is dark outside
- 13. how a bat 'sees'
Down
- 1. the big circle you can see at night
- 2. having no empty space
- 4. where stars and planets are
- 5. star pattern
- 7. this makes light bounce
- 9. the sun is a ____
- 10. the big blue thing high up above you
