NASAのインスタグラム(nasagoddard) - 8月9日 06時13分

Rapid Fire Flaring on the Sun - One rather small active region popped off no fewer than 15 minor flares over 18 hours (July 30-31, 2102). The activity of diminutive sunspot AR1538 is a sign of tension in the region's magnetic field. The active region show to the right also contributed another three flares during the same time period. The image was taken in a wavelength of extreme ultraviolet light. Credit: NASA/GSFC/SDO #nasa #sun #sunspot #nasagoddard

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