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solar flare |
Also found in: Wikipedia, Hutchinson | 0.02 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. solar flare [′sō·lər ′fler] (astrophysics) An abrupt increase in the intensity of the H-α and other emission near a sunspot region; the brightness may be many times that of the associated plage. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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This will provide an independent three-dimensional view of a solar eruption. Massive solar eruptions of the past have caused blackouts, cooked satellites and disrupted communications for hours. When they're blasted toward Earth, solar eruptions known as coronal mass ejections (CMEs) can disrupt radio communications, satellite links, and power systems. |
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