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The Planets - Mars

Because of its blood-red color (which comes from iron-rich dust), this planet was named for Mars, the Roman god of war. Mars is the fourth planet from the Sun, situated between Earth and…

Mars

The Martian MoonsMeteorites from Mars Mars, on the other side of Earth from Venus, is Venus's direct opposite in terms of physical properties. Its atmosphere is cold, thin, and transparent,…

Mars, in astronomy

(Encyclopedia) Mars, in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Mars has two natural satellites, discovered by Asaph Hall in 1877. The innermost…