Across
- 2. what's left behind
- 3. to work well
- 6. a device for measuring orientation
- 7. light that comes from a star
- 8. the air around us
- 9. planets outside our own universe
- 10. a type of light
Down
- 1. the next in line
- 4. another type of light
- 5. an instrument that measures light intensity