Mars

From ExoDictionary

Mars is the fourth planet from the Sun orbiting at a distance of 249,228,730km at aphelion and 206,644,545km at perihelion. Mars is the center of interest of the Marspedia project.

[edit] Characteristics

Mars has gravity 1/3 of Earth's. Surface temperatures vary from -140^oC to +20^oC. The atmospheric pressure is 1% of Earth's atmosphere.

[edit] Satellites

Mars has two natural satellites: Phobos and Deimos.