July 14, 2011 | 2
Astronaut Ron Garan took this photo of Earth during a six-and-a-half hour spacewalk on July 12. Garan has been at the International Space Station as the flight engineer for Expedition 28 since March, when he arrived on board a Russian Soyuz capsule (like the one docked at the upper left).
The Alpha Magnetic Spectrometer in the foreground is a particle physics detector—delivered and installed during shuttle Endeavour's final mission in May—designed to look for antimatter and dark matter that might offer clues about the origin of the universe.
The crew compartment of the docked shuttle Atlantis, which is on its last mission and concludes NASA's 30-year shuttle program, can be seen on the right.
—Lauren F. Friedman
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