in Roman mythology, the goddess of the dawn (=the beginning of the day when light first appears) . In Greek mythology her name is Eos. City (pop., 2000: 276,393), northern central Colorado, U.S. It was founded near Denver during the silver boom of 1891 and named Fletcher; it was incorporated and renamed in 1907. Though mainly residential, it is also the site of Buckley Air National Guard Base. Roman goddess of dawn. Her Greek counterpart was Eos. Hesiod described her as the daughter of the Titans Hyperion and Theia. She was the sister of Helios, the sun, and Selene, the moon. By the Titan Astraeus, she became the mother of the winds and of the evening star. In Greek mythology she was also represented as the lover of the hunters Cephalus and Orion. Luminous phenomenon of the upper atmosphere that occurs primarily at high latitudes. Auroras in the Northern Hemisphere are called aurora borealis, or northern lights; in the Southern Hemisphere they are called aurora australis, or southern lights. Auroras are caused by the interaction of energetic particles (electrons and protons) from outside the atmosphere with atoms of the upper atmosphere. Such interaction occurs in zones surrounding the Earth's magnetic poles. During periods of intense solar activity, auroras occasionally extend to the middle latitudes