A powerful X-class solar flare erupted on June 19, disrupting radio signals and potentially setting the stage for geomagnetic ...

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The latest solar flare follows an M-class one, the second-highest on the scale, that occurred days earlier on June 15. It ...

X-class flares are the most energetic class of solar flares, with each step up in number representing a tenfold increase in ...

NASA’s Solar Dynamics Observatory, which watches the Sun constantly, captured an image of the event. The image shows a subset ...