Space

4. of how circular an orbit is called what?
5. is a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light?
7. are dark colored bands called on Jupiter?
9. is made from small fragments of rock created by asteroid collisions?
13. Unit do we use to measure the average distance between Earth and the Sun?
15. Motion orbital motion of a spatial body in a direction that is opposite of what is normal in a given system?
16. are light colored bands called on Jupiter?
17. is an icy, small Solar System body that warms and begins to release gases?

1. type of planet is Pluto?
2. Shower event in which a number of meteors are observed to radiate, or originate, from one point in the night sky?
3. deep cliff like body of the planet?
6. is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant?
8. metallic hydrogen system in condensed matter sciences and the main constituent of gas giant planets?
9. travels to Earth, causes an explosion, and creates an impact crater?
10. Giant type of planets are Jupiter and Saturn?
11. Belt is the doughnut-shaped region of icy objects beyond the orbit of Neptune?
12. that could or did come together with many others under gravitation to form a planet?
14. is a planet that is composed primarily of silicate rocks or metals?