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solar flare
noun
: a sudden temporary outburst of energy from a small area of the sun's surface
called also flare
Examples of solar flare in a Sentence
Recent Examples on the Web
While sunspots are in many ways the opposite of coronal holes, this is still good news for those after a glimpse of the northern lights—as sunspots are known to release both solar flares and coronal mass ejections, which can trigger stunning aurora here on Earth.
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Barbara A. Perry, Newsweek, 28 Jan. 2025
There is no doubt that the sun has been incredibly active recently, firing out numerous powerful solar flares and CMEs, triggering strong geomagnetic storms on Earth, which, in turn, have produced some incredible auroral displays of late.
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Daisy Dobrijevic, Space.com, 15 Jan. 2025
All of the activity sparks solar storms, specifically solar flares and coronal mass ejections (CMEs), which hurl plasma and magnetic material into space.
—
Addy Bink, The Hill, 5 Jan. 2025
As the sun geared up to spit a powerful solar flare into space, NASA scientists snapped huge loops of plasma leaping from the sun's surface.
—
Michael Gfoeller and David H. Rundell, Newsweek, 16 Jan. 2025
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Word History
First Known Use
1938, in the meaning defined above
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Cite this Entry
“Solar flare.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solar%20flare. Accessed 7 Feb. 2025.
Kids Definition
solar flare
noun
: a sudden temporary outburst of energy from a small area of the sun's surface
More from Merriam-Webster on solar flare
Nglish: Translation of solar flare for Spanish Speakers
Britannica.com: Encyclopedia article about solar flare
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