SPACE

2. lacking a crew
4. a small celestial body composed of rock and metal
6. a celestial body moving in an elliptical orbit around a star
7. the stabilizing and guiding unit of a model rocket, an aerodynamic surface projecting from the rocket body for the purpose of giving the rocket directional stability
9. an optical instrument designed to make distant objects appear nearer, containing an arrangement of lenses, or of curved mirrors and lenses, by which rays of light are collected and focused and the resulting image magnified
12. movement, or a tendency to move, toward a center of attractive force, as in the falling of bodies to the earth
13. a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure
16. planet a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such
18. a person trained to travel in space
19. a jet engine containing its own propellant and driven by reaction propulsion

1. any celestial body orbiting around a planet or star
3. the federal agency that built and operated the space shuttles from 1981 through 2012
5. recovery rocket recovery system in which the engine's ejection charge causes it to convert into a glider which creates lift as it flies through the air
8. a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun
10. Allen belt each of two regions of intense radiation partly surrounding the earth at heights of several thousand kilometers
11. cargo of rocket
14. each of a series of Soviet artificial satellites, the first of which was the first satellite to be placed in orbit
15. a space entirely devoid of matter
17. a compartment for the pilot and sometimes also the crew in an aircraft or spacecraft
20. the path of a celestial body in its revolution about another