On the Cover – Issue 51, Summer 2013
Above Bear Lake, Alaska, the Northern Lights, or aurora borealis, are created by solar radiation entering the atmosphere at the magnetic poles. The appearance of these lights is just one way solar radiation affects us; it can also interfere with NASA missions in low-Earth orbit. To achieve long-duration human spaceflight missions in deeper space, several NASA centers are working to find better safety measures and solutions to protect humans from space radiation.
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Photo Credit: U.S. Air Force, Senior Airman Joshua Strang