An iceberg floats through the water in Ilulissat, Greenland, in July. Researchers are studying how climate change and melting glaciers will affect the rest of the world.
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The surface tower at a drill site, under construction during blistering Antarctic winds. Data from instruments, deployed through 450 meters of ice, is transmitted from the tower by satellite back to the Naval Postgraduate School.
Image courtesy of Tim Stanton
This artist's illustration shows the Voyager 1 space probe. The spacecraft was launched on Sept. 5, 1977, and as of August 2012, it is outside the bubble of hot gas, known as the "heliopause," that radiates from the sun.