An enigmatic line across Pluto: Plutonian canali!?

Pluto and Charon are growing larger in New Horizons' forward view, beginning to develop distinct personalities. A version of recent New Horizons photos processed by Björn Jónsson reveals an enigmatic dark line. Our maps of Pluto's surface are now as good as our maps of Mars and Venus, circa 1900!

from Planetary Society Blog http://ift.tt/1ItEmK3
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