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For Mercury's current position and visibility, see the Planet Wheel
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A view of the barren, cratered world of Mercury.
With a diameter of only 4,876km, Mercury is the smallest of the terrestrial
planets - less than half the size of Earth, and scarcely larger than Earth's Moon.
Surface map courtesy Jet Propulsion Laboratory. Copyright (c) California Institute of Technology, Pasadena, CA. All rights reserved.
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The second smallest of the planets in the Solar System, whose orbit
carries it the closest to the Sun. Mercury is a barren, desolate world, not unlike
Earth's Moon in general appearance.
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