City Lights, The Blue Marble

The Blue Marble is a famous photograph of the Earth, taken on December 7, 1972, by the crew of the Apollo 17 spacecraft, at a distance of about 45,000 kilometers (28,000 mi).

The name has also been applied by NASA to a 2012 series of image data sets covering the entire globe at relatively high resolution, created by carefully sifting through satellite-captured sequences taken over time, to eliminate as much cloud cover as possible from the collated set of images.

Because many societies typically orient maps and globes to place Antarctica at the bottom, NASA rotated the original picture 180 degrees before publishing it.

City Lights, The Blue Marble

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