Human Adaptation to Space

3. take something away from
4. in one or more directions
5. act or process of depicting or portraying
6. and propagation and emission of energy in the form of rays or waves
7. follow in an effort to overtake or capture; chase
8. path of a celestial body or an artificial satellite as it revolves around another body
12. substance, such as a liquid or gas, that can flow, has no fixed shape, and offers little resistance to an external stress
13. in accord with or characteristic of the normal functioning of a living organism
16. to a galaxy
18. lack of order or regular arrangement; confusion
19. feeling of sickness in the stomach characterized by an urge to vomit

1. natural force of attraction exerted by a celestial body, such as Earth, upon objects at or near its surface, tending to draw them toward the center of the body.
2. operated by, or performed by a human
3. period of existence or persistence
9. curve outward
10. keep in existence; maintain.
11. perceive or indicate differences; discriminate
14. chance of being injured or harmed; danger
15. physical or mental disorder, especially a mild illness
17. act or an instance of exposing