LAUREL, Maryland — Pluto’s nitrogen-rich atmosphere appears to be leaking across open space to collect on at least one of the poles of the dwarf planet’s large moon Charon, according to scientists processing data the New Horizons probe sent to Earth shortly before its closest approach to the two bodies. Enhanced-color versions of imagery sent from the spacecraft’s Long-Range Reconnaissance Imager Monday night show the north pole of Charon displaying the same orange ...


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