Across
- 2. what is the second planet that we landed on
- 6. how old is the Milky way
- 8. how many people have gone to the space
- 9. how many planets have we landed on
- 11. how many planets are there in the Universe
- 12. the furthest planet out of our solar system
- 14. what is the first planet that we landed on
- 15. what is the first rocket sent into the space
Down
- 1. who is the first man to go to space
- 3. how old is the sun
- 4. how old is the universe
- 5. the distance light travels in one Earth year
- 7. how many astronaut and cosmonaut died during spaceflight
- 10. how many rockets have been sent to the space
- 13. which country first sent people to space