NASAのインスタグラム(nasa) - 5月4日 07時32分

From April 24 to 26, this lone active region on the Sun with its tangled magnetic field lines swaying and twisting above it put on a fiery display for our Solar Dynamic Observatory. The charged particles spinning along these field lines illuminate them. The region did not erupt with any significant solar storms, although it still might…
To learn more about how we study solar activity, visit: www.nasa.gov/sdo
Credit: NASA/Solar Dynamics Observatory
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