More about Mars:
The diameter of Mars is 4,217 miles, half the size of Earth but twice the size of the moon Mars is about 10 light minutes from Earth, so it takes 10 minutes radio signals to travel one way Mars is 1.5 Astronomical Units (1 AU=93,000,000 miles) from the sun A Martian year is 687 Earth days, or 670 Martian days A Martian day is 24 hours, 37 minutes Mars gravity is about 3/8 that of Earth The poles of Mars are tilted 25 degrees to the solar plane, giving it seasons Olympus Mons is 52,000 feet high and 370 miles wide, about the size of Arizona Valles Marineris is 2,500 miles long, and on the average 6 miles deep, and 12 miles wide. Mars has two tiny moons, Phobos and Deimos. Phobos (fear) and Deimos (terror) were the sons of the greek god of war Ares (Mars in the Roman mythology)
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