NASAからの自動画像投稿 Our Sun: Three Different Wavelengths http://www.nasa.gov/image-feature/our-sun-three-different-wavelengths
from Tumblr https://tatsuh.tumblr.com/post/172795013725
NASAからの自動画像投稿 Our Sun: Three Different Wavelengths http://www.nasa.gov/image-feature/our-sun-three-different-wavelengths
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