NASAのインスタグラム(nasa) - 7月16日 04時24分

Between July 5-11, our Sun-observing satellite, the Solar Dynamics Observatory, saw a sunspot rotate into view and captured it on this. Such sunspots are a common, but are less frequent as we head toward solar minimum, which is the period of low solar activity during its regular approximately 11-year cycle. This sunspot is the first to appear after the sun was spotless for two days, and it is the only sunspot group at this moment. Like freckles on the face of the sun, they appear to be small features, but size is relative: The dark core of this sunspot is actually larger than Earth.
Credits: NASA’s Goddard Space Flight Center/SDO/Joy Ng, producer
#nasa #sun #sunspot #solarsystem #heliophysics #sdo #solardynamicsobservatory #astronomy #earth

[BIHAKUEN]UVシールド(UVShield)

>> 飲む日焼け止め！「UVシールド」を購入する