Across
- 2. What are the abbreviations for National Aeronautics and Space Administration?
- 5. What is it called when you make a few trips, getting closer each time until you know it is safe?
- 8. You need a lot of knowledge in what two subjects?
- 9. a device to make distant objects appear nearer and larger.
- 10. The path an object makes around another object under the force of gravity
- 12. The appearance of the moon at one point in its cycle.
- 13. people who study the universe beyond the Earth's atmosphere.
Down
- 1. a telescope using a lens to produce an image.
- 3. what is one place you can practice weightlessness?
- 4. How long does it take to become an astronaut?
- 6. a spacecraft that is designed to penetrate the surface.
- 7. the prefix for impossible is?
- 11. a telescope using a mirror to produce an image?
- 14. if a star looks like it is moving it is really what?