In Plain Sight
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Twice each day, twelve hours apart, a new image of the Earth is captured by the Suomi National Polar-orbiting Partnership (NPP). The 1:30 p.m. diurnal image, assembled from data gathered over a number of days, shows a cloudless “blue marble.” This solitary sphere hovering in space recalls The Blue Marble, the 1972 picture of Earth taken by the crew of the Apollo 17 mission, which quickly became the icon of a unified, borderless, and vulnerable planet. It catalyzed an appeal to global citizenship and heightened concerns over environmental stewardship.
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