space and stuff

2. A fixed or adjustable vane or airfoil affixed longitudinally to an aerodynamically or ballistically designed body for stabilizing purposes.
3. A vehicle for driving over rough terrain.
6. The arrangement of the natural and artificial physical features of an area.
7. A vector quantity that includes the speed and direction of an object.
8. A chemical mixture that is burned to produce thrust.
10. A rille. Rilles are usually named for the craters they are close to. Example: Rima Cavendish is a rille that runs near the Cavendish crater.
12. The mechanical coupling of two or more human-made orbiting objects
15. The informal competition between the United States and the Soviet Union to launch unmanned satellites, send people into space, and land them on the Moon.
16. A path described by one body in its revolution about
17. Fine, greyish dust and soil that covers the surface of the moon. Formed by constant pounding of the surface by impacts, the regolith can be between 2 meters and 20 meters deep.

1. A state of very weak gravity.
4. A condition in which no acceleration from gravity or other force can be detected. Zero gravity.
5. A vehicle designed for space flight.
9. The path of an object moving through space.
11. A long, narrow valley on the surface of the moon. These grooves or channels can be several kilometers wide and hundreds of kilometers long.
13. The science of getting ships, aircraft, or spacecraft from place to place.
14. Fine, greyish dust and soil that covers the surface of the moon. Formed by constant pounding of the surface by impacts, the regolith can be between 2 meters and 20 meters deep.