Across
- 2. The principle that explains how rockets propel themselves
- 5. The first human to travel into space
- 7. The atmospheric layer where weather occurs
- 9. One of the organizations that oversees space exploration
- 10. A vehicle designed for travel in outer space
- 12. A permanently crewed space station constructed by China
Down
- 1. A spacecraft designed to land on the Moon
- 3. The part of an aircraft that generates lift
- 4. The first person to step foot on the Moon
- 6. The study of flight and the mechanics of air
- 8. A quantity that designates how fast and in what direction a point is moving
- 11. First nation to make a controlled landing on the far side of the Moon