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A Map of the Chief Plains and Craters of the Moon

A Map of the Chief Plains and Craters of the Moon.jpg The Spectroscope, an Instrument for Analysing LightThumbnailsA Diagram of a Stream of Meteors Showing the Earth Passing Through ThemThe Spectroscope, an Instrument for Analysing LightThumbnailsA Diagram of a Stream of Meteors Showing the Earth Passing Through ThemThe Spectroscope, an Instrument for Analysing LightThumbnailsA Diagram of a Stream of Meteors Showing the Earth Passing Through ThemThe Spectroscope, an Instrument for Analysing LightThumbnailsA Diagram of a Stream of Meteors Showing the Earth Passing Through ThemThe Spectroscope, an Instrument for Analysing LightThumbnailsA Diagram of a Stream of Meteors Showing the Earth Passing Through ThemThe Spectroscope, an Instrument for Analysing LightThumbnailsA Diagram of a Stream of Meteors Showing the Earth Passing Through ThemThe Spectroscope, an Instrument for Analysing LightThumbnailsA Diagram of a Stream of Meteors Showing the Earth Passing Through Them

The plains were originally supposed to be seas: hence the name "Mare."