NASAのインスタグラム(nasagoddard) - 7月20日 04時24分

Solar Archipelago - A group of sunspots, labeled as Active Region 1520 rotated into view over the left side of the sun on July 7, 2012. The large spot on the bottom left stretches more than 11 Earths, or 87,000 miles across. The full chain of spots is closer to 200,000 miles across. This image was captured by amateur astronomer Alan Friedman on July 10. #nasa #nasagoddard #sun #sunspot

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