Across
- 2. A layer of a gas mixture surrounding the surface of a planet
- 4. ... Way = the name of the galaxy containing Earth and the Sun
- 6. A star may turn into this when it reaches its end
- 8. An independently powered section of a rocket or spacecraft
- 9. Seventh planet from the Sun
- 10. ... disk = the ring encircling some plantes, e.g. Saturn
Down
- 1. The point on the celestial sphere directly above the observer
- 3. The system for radioing information, from a space vehicle to the ground
- 5. ...belt, a zone outside Earth named after James Van Allen
- 7. Golden part of the helmet covering the faceplate