Across
- 5. doctor
- 6. an unpleasant emotion
- 7. alien
- 11. an envelope of gas surrounding the earth
- 12. extravehicular activity
- 13. astronaut out of space protection
- 14. a gravitational field so intense that no matter or radiation can escape
- 17. blood going to the upper part of your body
- 19. an act of launching something
- 20. chemical element with symbols
Down
- 1. a US space laboratory
- 2. an illusion of incredible speed
- 3. a special kind of tablet that gives vitamins and calcium
- 4. commonly defined as the totality of existence
- 8. where trash goes
- 9. brightening observe over he sun surface
- 10. tooth pain
- 15. hard upper torso
- 16. an important assignment
- 18. a force that attracts you the earth