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Astronaut Doug Wheelock took this photograph from the International Space Station. Courtesy


Flickering, colored lights in the atmosphere that are caused by electrons trapped in Earth’s magnetic field. The aurora borealis, also called the northern lights, are seen over arctic regions; the aurora australis, also called the southern lights, are seen over Antarctic regions. [Aurora is the Latin word for “dawn” and also the name of the Roman goddess who brought the morning sun into the sky.]