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  2. Explosive sun: What are solar flares? How they affect us and ...

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    This week the sun released three solar flares and NASA says they were big ones. These giant explosions from the sun happened over a 24-hour period between Wednesday evening, Feb. 21, to Thursday ...

  3. Powerful solar flare is headed towards Earth, Nasa says

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    Solar flares are powerful bursts of energy that are hurled out of the Sun. When they arrive at Earth, they can affect radio communications, power grids, navigation systems, satellites and ...

  4. Sun shoots out biggest solar flare in nearly a decade, but ...

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    The good news is that Earth should be out of the line of fire this time because the flare erupted on a part of the sun moving away from Earth. NASA's Solar Dynamics Observatory captured the bright ...

  5. Solar flare - Wikipedia

    en.wikipedia.org/wiki/Solar_flare

    A solar flare is a relatively intense, localized emission of electromagnetic radiation in the Sun's atmosphere. Flares occur in active regions and are often, but not always, accompanied by coronal mass ejections, solar particle events, and other eruptive solar phenomena. The occurrence of solar flares varies with the 11-year solar cycle.

  6. Sun unleashes powerful solar flare, Nasa says

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    The Sun has unleashed a powerful solar flare, Nasa has said. The flare, designated X2.3, belongs to the most intense X class of flares. It was spotted by Nasa’s Solar Dynamics Observatory, which ...

  7. Solar phenomena - Wikipedia

    en.wikipedia.org/wiki/Solar_phenomena

    A solar flare is a sudden flash of brightness observed over the Sun's surface or the solar limb, which is interpreted as an energy release of up to 6 × 10 25 joules (about a sixth of the total Sun's energy output each second or 160 billion megatons of TNT equivalent, over 25,000 times more energy than released from the impact of Comet ...

  8. Solar particle event - Wikipedia

    en.wikipedia.org/wiki/Solar_particle_event

    Post-eruptive loops in the wake of a solar flare, image taken by the TRACE satellite (photo by NASA). In solar physics, a solar particle event (SPE), also known as a solar energetic particle event or solar radiation storm, [a] [1] is a solar phenomenon which occurs when particles emitted by the Sun, mostly protons, become accelerated either in the Sun's atmosphere during a solar flare or in ...

  9. Massive solar storm to hit Earth today with danger of radio ...

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    Region 3500 on our Sun just fired a near X-class flare and launched a strong Earth-directed #solarstorm. Waiting for coronagraph imagery, but it looks like this storm could arrive by December 1.