| A | B |
|---|
| Ptolemy | role in improving geocentric theory |
| Copernicus | role in developing the heliocentric theory |
| Kepler | formulated the 3 laws of planetary motion |
| Galileo | first to use the telescope |
| Newton | formulated the law of universal gravitation |
| Brahe | developed the most accurate observations |
| Kepler's goal | use sicence to lead men to God |
| axis | the line defined by an objects rotation |
| ecliptic | the path defined by an object's revolution |
| equinox | sun is directly over the equator |
| inertia | tendency in motion to remain in motion |
| parallax | the apparent shift in position caused by a change in the position of observation |
| solstice | sun apparent movement reaches the northern or southern limit |
