AND MORE... A lot of the light in the universe has a “color” that o u r e y e s a r e n ’t a b l e t o d e t e c t - e x a m p l e s o f t h i s light are radio waves, ultraviolet light, x-rays, e t c . E v e n t h o u g h w e c a n ’t s e e t h i s l i g h t , i t i s s t i l l being emitted by stars, and astronomers can build instruments which are able to detect it and look at its spectrum as well.
microwave, 0.01-1 > wavelength
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