Across
- 2. first spacecraft designed to be reused
- 6. United States’ first space station
- 9. first human being to set foot on the surface of the moon
- 12. people who journey into space
- 14. America’s first person in space
- 15. first mission to land a spacecraft on the moon
- 16. high point of a wave
Down
- 1. first person to travel in space
- 3. a single rise or depression in a series of waves
- 4. the father of modern rocketry
- 5. any object that orbits a larger object
- 7. a region in which certain objects are attracted or repelled by the magnet
- 8. low point of a wave
- 10. first artificial object to orbit Earth
- 11. a movement of energy from one place to another
- 13. a device to make distant objects appear closer or clearer