solar flare


solar flare

noun

Definition of SOLAR FLARE

:  a sudden temporary outburst of energy from a small area of the sun's surface —called also flare

First Known Use of SOLAR FLARE

1938

Rhymes with SOLAR FLARE

solar flare

noun    (Concise Encyclopedia)

Sudden 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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