Across
- 2. the region beyond earth's atmosphere
- 3. to learn
- 6. large round object revolving around the sun
- 8. a bright point in the sky
- 9. a picture made by a camera
- 12. experts in science
Down
- 1. large groups of stars
- 4. lenses/mirrors that gather light to see objects
- 5. to send into outer space
- 7. the planet we live on
- 10. to travel around in a curved path
- 11. space travel and research