Key features on the visible face of the Moon.
Surface map courtesy Jet Propulsion Laboratory. Copyright (c) California Institute of Technology, Pasadena, CA. All rights reserved.
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The single moon of the planet Earth. A cratered and barren body, its orbit is such that, within
certain minor variations, it always shows the same face towards its mother planet.
The first sliver of a New Moon, when the Moon begins to move away from the
Sun in the sky, appears at intervals of about 29½ days. This regular event forms the basis of some of
Earth's oldest calendars.
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Earth's moon is a tiny body in comparison with its mother planet: its diameter is less than one third that of Earth.
Surface maps courtesy Jet Propulsion Laboratory. Copyright (c) California Institute of Technology, Pasadena, CA. All rights reserved.
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