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8 images of Earth as seen from space

March 7, 2011, 12:25 p.m.
an astronaut floating in space above the earth in the background

Photo: NASA

4 of 9

Astronaut over Earth

This photo, taken in 1984 during a Challenger shuttle mission, shows astronaut Bruce McCandless floating in space farther away from his home ship than any other astronaut had ever gone before. McCandless was free-flying about 320 feet away from the Challenger. He is wearing a Manned Maneuvering Unit, or MMU, to propel himself in space.