Our Solar System - Mars
Mars is the fourth planet from the Sun in the Solar System. The planet is named after Mars, the Roman god of war. It is also referred to as the "Red Planet" because of its reddish appearance as seen from Earth.
Mars is a terrestrial planet with a thin atmosphere. It is the site of Olympus Mons, the highest known mountain in the solar system. Until the first flyby of Mars by Mariner 4 in 1965, it was speculated that there might be liquid water on the planet's surface. The surface is home to the two Mars Exploration Rovers. Geological evidence gathered by these and preceding missions suggests that Mars previously had large-scale water coverage, while observations also indicate that small geyser-like water flows have occurred in recent years. Mars has two moons, Phobos and Deimos, which are small and irregularly shaped. These may be captured asteroids.
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