| A | B |
|---|
| eccentricity | how oblong a circle is (how off it is from being a circle |
| revolution | the motion of a satellite around an object |
| rotation | the motion of an object about its axis |
| orbital plane | the angle at which a planet orbits the Sun |
| Titus-Bode Law | a mathematical prediction of where planets are located from the Sun |
| Kepler's First Law | planets orbit the Sun in an ellipse |
| Kepler's Second Law | the Sun is at a focus of the planetary orbit's ellipse |
| Kepler's Third Law | the area "swept out" by the planet as it orbits the Sun is equal for equal times |
| Newton | explained why planets orbit the Sun |
| Kepler | explaines how planets orbit the Sun |
| aphelion | farthest location of a planet from the Sun |
| perihelion | closest location of a planet to the Sun |
| "p" in p2=a3 (imagine numbers in superscript) | period/time |
| "a" in p2=a3 (imagine numbers in superscript) | average distance from Sun |
| Kuiper Belt | short-term comets come from here |
| Scattered Disk | dust, ice/rocks located past the Kuiper Belt but before the Oort Cloud |
| source of long-term comets | Oort Cloud |
| heliosphere | all the area in space influenced by the Sun |
| heliopause | the edge/border of a solar system |
