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Noun(1) the first light of day,an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force,(Roman mythology) goddess of the dawn,counterpart of Greek Eos [also: aurorae (pl)](2) the first light of day(3) an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force(4) (Roman mythology) goddess of the dawn(5) counterpart of Greek Eos [also: aurorae (pl)]

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(1) But, as the team observed, although Saturn's aurora do share characteristics with the other planets, they are fundamentally unlike the auroral displays on either Earth or Jupiter.(2) Birkeland's experiments failed to account for one of the most important traits of auroras : they are common around the polar regions but exceedingly rare at the poles themselves.(3) There was an exceptional auroral glow over the entire sky.(4) A typical example of how both missions will co-operate is the study of the magnetic substorms producing the bright aurorae .(5) Nevertheless, the potential exists for periods of strong auroral storm conditions developing during the next several days (at least).(6) During auroral light shows, extraneous electric currents would flow through the wires, superseding the normal telegraph currents and making transmission of messages almost impossible.(7) A few years ago it was suggested that auroral phenomena could exist on Mars too.(8) Vivid red auroral rays glowed over all over North America, stretching as far south as Arizona, southern California, Mississippi, and Texas.(9) Severe solar weather is often heralded by dramatic auroral displays, northern and southern lights, and magnetic storms that occasionally affect satellites, radio communications and power systems.(10) Although the solar wind produces beautiful auroras , it can also cause a variety of undesirable consequences.(11) The eventual physical effects of the storm were minimal - auroras were visible in Boston and other northern U.S. cities, but no satellites or power grids had major failures.(12) The Hubble Space Telescope has spotted auroras near the poles of both Saturn and Jupiter.(13) In the southern hemisphere, sky watchers saw the aurora australis over New Zealand, Australia, and South Africa.(14) This causes the phenomenon called the northern lights, also known as the aurora borealis .(15) Gaps in the magnetosphere also allow for one of Earth's most beautiful, eerie phenomena: the aurora borealis , or northern lights.(16) Radio waves appear to be tied to the brightest auroral spots.