Solar system assessment

3. animal animal that hunts at night
5. a device that requires skill for proper use
6. an imaginary line about which a body rotates.
9. the relationship that exists between the size, number, or amount of two things and that is often represented by two numbers
11. (plural) any one of the very large groups of stars that make up the universe
12. the act or process of moving or turning around a central point
17. plural) the size, length, or amount of something, as established by measuring
18. everything that exists anywhere
19. a transparent optical device used to converge or diverge transmitted light and to form images
23. (plural) a group of stars that forms a particular shape in the sky and has been given a name
24. of first rank or importance or value

1. a group of animals or plants that are similar and can produce young animals or plants
2. to change level, strength, or value frequently
4. having to do with the natural force that causes things to fall towards the earth
6. the science or occupation of farming
7. a system that includes a star and all of the matter which orbits that star, including planets and their moons
8. a situation in which there is much destruction or confusion
10. to look at (something) in a careful way to learn more about it
13. extraordinarily large in size or extent or amount or power or degree
14. extend in scope or range area
15. of or relating to or evolving
16. a science that deals with the history of a planet as recorded in rocks
17. ideas that are believed by many people but that are not true
20. an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination.
21. something seen or learned for the first time
22. a device that is used to obtain information from outer space and send it back to Earth