| A | B |
| smallest planet in solar system | pluto |
| explored neptune | voyager 2 |
| 8th planet from sun | neptune |
| atmosphere hydrogen, helium, methane | uranus |
| similar atmosphere to uranus- | neptune- |
| gives neptune and uranus blue green color | methane |
| has similar features like great red spot on Jupiter* | neptune* |
| Name of stormlike feature on Neptune | Great Dark Spot |
| liquid H2O, methane, ammonia, rocky core | neptune and uranus |
| number of moons neptune has | 8 |
| largest moon of neptune | Triton |
| atmosphere of moon Triton | thin, nitrogen |
| rings thick in some places, thin in other# | neptune# |
| axis of rotation on its side* | uranus* |
| axis of rotation tilted about 47 degrees) | neptune) |
| unique among the outer planets | pluto |
| outer planet: thin atmosphere,solid icy rocky surface- | pluto- |
| Charon | moon of pluto |
| vast disk of icy comets near Neptune's orbit | Kuiper belt |
| planet and moon are the same size | pluto, Charon |
| largest in solar system | jupiter |
| 2nd largest planet | Saturn |
| has rings around the planet * | Saturn* |
| outer planet: density is low could float on water^ | Saturn^ |
| Great Red Spot- | Jupiter- |
| bands of red, tan, brown clouds) | Jupiter) |
| number of moons of saturn | 20 |
| largest moon of Saturn | Titan |
| Explored by Galileo probe& | Jupiter& |
| Largest moon of solar system | Ganymede |
| mosts active volcanic thing in solar system | moon Io |
| moons of jupiter | Io, Europa, Ganymede, Callisto |
| similar atmosphere | Jupiter, Saturn |
| number of satellites of Uranus | 17 |
| have tilted orbits | uranus, neptune |