«Sputnik Planum» region is a vast stretch of icy plains whose surface is broken into cell - like polygon blocks by snaking troughs (scientificamerican.com)
Not far from a range of giant ice mountains on Pluto lies a vast stretch of icy plains whose surface is broken into cell - like blocks by snaking troughs, new photos by NASA's New Horizons spacecraft reveal. (scientificamerican.com)
When the New Horizons probe zipped past Pluto last July, it spotted weird, kilometers - wide polygonal features (lower right of image above) within a broad icy plain dubbed Sputnik Planum. (sciencemag.org)