NASAのインスタグラム(nasa) - 6月27日 06時56分


The sun unleashed no less than five solar flares in five days this week all from the same dynamic active region (June 21-25, 2015). Many of these were associated with coronal mass ejections, most of which impacted Earth and generated beautiful auroral displays. The images were taken in a wavelength of extreme ultraviolet light. Flares are the bright flashes you see, followed by spirals of magnetic field lines as the active region reorganizes itself.
Credit: Solar Dynamics Observatory, NASA

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