The planet Mars (Greek: Ares
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.
Mars has gravity 1/3 of Earth's. Surface temperatures vary from -140oC to +20oC. The atmospheric pressure is 1% of Earth's atmosphere.
Mars has two natural satellites: Phobos and Deimos.