Key Terms for Research:

Period of Rotation: how long does it take to rotate on its axis one time?

Period of Revolution: how long does it take to travel around the Sun?

Orbit: for Sun - how far from the center of the Milky Way? for Planets - How far from the Sun?

Location: 1st, 3rd, last from the Sun?

Size/Mass: kg

Terrestrial: rocky surface

Gas Giant: very large, no solid surfac

Atmosphere: is it surrounded by a blanket of gases? If so, what kind of gas?

Physical Properties: other characteristics that are different that those of the other planets

Satellite: a natural or man-made body surrounding an object