Hayden Planetarium - Planet Mars in Miniature
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This view shows the mechanism which animates the model of Mars in the Hall of the Sun. this planet, which moves once around the sun annually in about 687 days, completes one trip here in about 22 minutes, moving along its circular track. Its day of 24 hours and 37 minutes is speeded up in proportion, and around Mars are seen revolving its two moons, Phobos and Deimos. |