Across
- 3. the layer of gases that surrounds the earth
- 5. device that orbit around earth
- 8. a person who travels in space
Down
- 1. a vehicle that travels in space
- 2. the largest planet in the solar system
- 4. the scientific study of stars,planets,etc.
- 6. to send or shoot a rocket into space
- 7. the 3rd planet from the sun