Known as the "Blue Marble," the photo was taken Dec. during the Apollo 17 mission as it traveled toward the moon. Africa and the Arabian Peninsula are in the foreground. NASA photos of Earth: Comparing the planet 1972 to 2015 - Chicago Tribune
Satellite Camera Provides “EPIC” View of Earth. A NASA camera on the Deep Space Climate Observatory (DSCOVR) satellite has returned its first view of the entire sunlit side of Earth from one million miles away.