thumbnail|The blue haze of Pluto.  released yesterday the first coloured pictures of  's blue atmosphere and water ice on the surface taken by the space probe  . The scientists suggest nitrogen and methane in the upper atmosphere, exposed to the Sun's , break and combine to form more complex similar to a process first observed on , 's satellite. Some of them grow to tholins. Eventually they are coated with volatile gas frost and fall to the surface, contributing to its red color.
thumbnail|The blue haze of Pluto. NASA released yesterday the first coloured pictures of Pluto 's blue atmosphere and water ice on the surface taken by the space probe New Horizons . The scientists suggest nitrogen and methane in the upper atmosphere, exposed to the Sun's , break and combine to form more complex similar to a process first observed on Titan, Saturn 's satellite. Some of them grow to tholins. Eventually they are coated with volatile gas frost and fall to the surface, contributing to its red color.
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NASA
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Pluto
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New Horizons
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Titan, Saturn