The 'Blue Marble': One of Earth's most iconic images, 50 years on
Briefly

Written by Ashley Strickland, CNN In Snap, we look at the power of a single photograph, chronicling stories about how both modern and historical images have been made.On Christmas Eve in 1972, humanity received a gift: A portrait of the Earth as a vivid globe.Clouds swirl over the vast African continent and south polar ice cap, all set against the deep blue of our world's oceans.
Read at www.cnn.com
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