| A | B |
|---|
| Model | representation of how something works |
| Physical Model | model you can touch |
| Conceptual Model | takes place in your mind |
| Collaborate | work together |
| Consensus | come to agreement |
| Solar system | a sun and everything within reach of its gravity |
| Cosmology | study of the origin and development of the universe |
| Sun | closest star to earth |
| Planet | orbits around a star |
| Moon | orbits around a planet |
| Galaxy | a very big system of stars |
| HST | Hubble Space Telescope |
| Black Hole | region in space where light can't even escape |
| Ptolemy | believed earth was the center of the universe |
| Copernicus | developed the idea of a sun centered universe |
| Galileo | viewed 4 moons going around Jupiter |
| Black Box | system that can't be easily explained |
| System | parts that work together in a meaningful way |
