Spectacular Black Marble Images Show Earth in Darkness

Black Marble - United States

The satellite that took these images flies over any given point on Earth's surface twice each day at roughly 1:30 a.m. and p.m. Hovering 512 miles above the surface, the satellite sends its data once per orbit to a ground station in Norway.

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NASA's Black Marble is a set of high-resolution composite images of the mysterious dark Earth during the evening hours as seen from space.

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