| A | B |
|---|
| Kepler | planets orbit are elliptical |
| Galileo | made first telescope |
| Mercury | cratered planet closest to sun |
| Venus | hottest planet due to Greenhouse Effect |
| Earth | Water as solid, liquid, gas |
| Mars | Red planet |
| Olympus Mons | Largest volcano is solar system |
| Phobos and Deimos | Fear and Death |
| Jupiter | Largest planet |
| Great Red Spot | Huge storm on Jupiter |
| Io | Closest moon to Jupiter |
| Ganymede | Largest moon in solar system |
| Saturn | Least dense planet |
| Titan | Saturn's moon with an atmosphere |
| Uranus | Green planet that rolls on its side |
| Neptune | Blue-green planet #8 or #9 from sun |
| Pluto | Smallest planet |
| comet | dirty snowball |
| Oort Cloud | where comets form |
| Meteoroid | small rock in space |
| meteor | shooting star |
| meteorite | rock that came thru atmosphere and didnt completely burn up |
| asteroid | rock between Earth and Mars |
| Ceres | largest asteroid |
| coma | cloud of gas around a comet |
| nucleus | solid part of a comet |
| Charon | Pluto's moon |
| Astronomical unit | distance from Earth to sun |
