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Solar Flares are Stunning but are They Dangerous? Here's What to Know

Explore the dynamic nature of solar flares, intense bursts of radiation from the Sun, their causes, effects on Earth, and the remarkable visuals they create.

ByJake Parks
NASA’s Solar Dynamics Observatory captured this image of a solar flare – as seen in the bright flash on the left – on Dec. 31. 2023. The image shows a blend of 171 and 131 Angstrom extreme ultraviolet light that highlights the extremely hot material in flares and which is colorized in blue and gold.Credit: NASA/GSFC/SDO

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Solar flares are one of the most powerful phenomena in our solar system. These bursts of radiation sporadically erupt from the Sun and can unleash the energy equivalent of billions of hydrogen bombs in mere minutes.

A better understanding of solar flares can provide valuable insight into the nature of our Sun, as well as how these events can affect Earth. Let's dive into the basics of solar flares, from what they are to the dangers they can present.

Image captured by NASA's Solar Dynamics Observatory on June 20, 2013 shows the bright light of a solar flare on the left side of the Sun. Credit: NASA/SDO

NASA/SDO

Solar flares are intense bursts of radiation from the Sun, releasing vast amounts of energy across the electromagnetic spectrum — from radio waves to X-rays to gamma rays. They are caused by the sudden release of magnetic energy stored in the Sun, ...

  • Jake Parks

    Jake Parks is a freelance science writer and editor for Discover Magazine, who covers everything from the mysteries of the cosmos to the latest in medical research.

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