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solar flare |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.06 sec. |
solar flareSudden intense brightening of a small part of the Sun's surface, often near a sunspot group. Flares develop in a few minutes and may last several hours, releasing intense X rays and streams of energetic particles. They appear to be connected with changes in the Sun's magnetic fields during the solar cycle. The ejected particles take a day or two to reach the vicinity of Earth, where they can disrupt radio communications and cause auroras, and may pose a radiation hazard to astronauts. |
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| Erik Knudsen solar flares a melon for a live studio audience. These provide unusual views of the sun, highlighting phenomena such as solar flares, sunspots, and coronal mass ejections. And if the power should go out one night, the cable fail and solar flares burn up the satellites, conversation may yet make a comeback. |
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Solar flares
