Keagen Markuson P4 10-23-2023

5. artificial material that is orbiting Earth but is no longer functional
6. a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky
7. a torus-shaped region in the Solar System, centered on the Sun and roughly spanning the space between the orbits of the planets Jupiter and Mars.
8. an icy, small Solar System body that warms and begins to release gases when passing close to the Sun
9. a regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points
12. a small body of matter from outer space that enters the earth's atmosphere
14. fundamental system in condensed matter sciences and the main constituent of gas giant planets
15. a planet that is composed primarily of silicate rocks or metals
16. a meteor that survives its passage through the earth's atmosphere
17. composed mainly of hydrogen and helium

1. a conic section is a non-negative real number that uniquely characterizes its shape.
2. 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.
3. circumstellar disc in the outer Solar System
4. solid objects thought to exist in protoplanetary disks and debris disks
6. a small body moving in the solar system
10. actual or apparent motion of a body in a direction opposite to that of the (direct) motions of most members of the solar system or of other astronomical systems with a preferred direction of motion.
11. A small planet
13. the area around a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planets