Astronomy Crossword

3. Dwarf planet in the Kuiper belt.
5. Abbreviation for The National Aeronautics and Space Administration.
9. DISCOVERIES What has allowed us to know as many things about the planets as we do.
11. Farthest planet from the sun in our solar system.
12. The name of the star that allows us to live on Earth.
15. Planet that has 9 times the radius of the earth.
17. Unit of length used informally to express astronomical distances.
18. Luminous sphere of plasma held together by its own gravity.

1. Neil Armstrong's footsteps are still visible on this area from 1969.
2. Seventh planet from the Sun.
4. More of a theory than fact. Many people believe their is life on this planet.
6. Study of space.
7. First name on first man to walk on the moon.
8. This planet has the longest rotation period in the entire solar system.
9. The name of the program that played a large role in the race to space.
10. Last name of first person to walk on the moon.
13. Largest planet in our solar system.
14. Planet where your weight would be 38% of your weight on Earth.
16. Last name of Neil Armstrong's partner on the voyage to the moon.
18. Where our solar system is located.