Rather than copying Titan, Pluto’s haze may have different origin – Ars Technica

Enlarge/ Pluto’s atmosphere is fairly hazy.
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Saturns moon Titan is distinctive, in part for its orange-ish and hazy atmosphere. Its virtually impossible to see surface features because the haze is so opaque in the visible portion of the spectrum; what we know of it comes from things like radar imagery, instead. The haze is the product of chemical reactions in the upper atmosphere, driven by ultraviolet radiation. These then cascade into larger and more complex organic…

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