Solar activity doesn't look like it's slowing down anytime soon.
Solar flares are caused when magnetic energy builds up in the solar atmosphere and is released in an intense burst of electromagnetic radiation. More powerful M- and X-class flares can cause minor to extensive radio blackouts on the side of Earth facing the sun at the time of the eruption.
This is what happened when the recent X1.09-class solar flare sent a strong pulse of X-rays and extreme ultraviolet radiation toward Earth. Traveling at the
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