NASA released a truly incredible collage image of the Sun today, showing what it looks like at different wavelengths:
The picture was created by stitching together pieces of individual images of the Sun, each taken with a filter that shows a different wavelength of light, and reveals specific information about the Sun's structure, its magnetic field and the dynamics of its atmosphere.
Check out a full explanation at this link, and see the individual images at the bottom of the page (if you mouse over each of the 13 individual wavelength images, they will enlarge to show you more detail and give some extra explanation).
(Photo courtesy NASA/SDO/Goddard Space Flight Center)
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