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Eerily grinned Jack-o-lantern Sun |
Just in time for Halloween NASA releases an image that is actually a composite of 2 separate images of extreme ultraviolet wavelengths at 171 and 193 Ångströms taken on Oct. 8, 2014. The wavelengths, which are not visible to the unaided eye, have also been colored gold and yellow to create the spooky Halloween jack-o-lantern.