www.dailygalaxy.com
"Our personal window on the Universe is terribly small within a stunnng range of wavelengths. With our eyes we see wavelengths between 0.00004 and 0.00008 of a centimeter (where, not so oddly, the Sun and stars emit most of their energy). The human visual spectrum from violet to red is but one octave on an imaginary electromagnetic piano with a keyboard hundreds of kilometers long."
James Kaler, astronomer and author…
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