NASAのインスタグラム(nasa) - 11月2日 06時45分

Hot…hotter…hottest! This sequence of images shows the Sun from its surface – 6,000°C – to its upper atmosphere – 10,000,000°C –all taken at about the same time on Oct. 27. Yes, the Sun’s outer atmosphere is much, much hotter than the surface. Scientists are getting closer to solving the processes that generate this phenomenon.
The first image shows the surface of the Sun in filtered white light; the other seven images were taken in different wavelengths of extreme ultraviolet light. Swipe to see them all!

Note that each wavelength reveals somewhat different features. They are shown in order of temperature from the first one at the surface, out to the upper atmosphere.
Credit: NASA
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