Across
- 2. The world's first artificial satelite
- 3. Minimum speed for a rocket to escape from the orbit
- 5. It is used for launching spacecraft into space
- 7. Used to slow down a spacecraft
- 8. What inspired the space race
Down
- 1. Travel through outer space
- 4. First man in space
- 6. Navigation system that tells you your exact location anywhere on Earth