Time to open the eighth door in the advent calendar. Until the New Year, I’ll be opening a door onto a different landscape from somewhere in the solar system. Where in the solar system is this nearly flat plain? Click to enlarge >Triton’s surfaceThe smooth-floored depression with an irregular outline is named Ruach Planitia, and contains one of Triton’s few named impact craters, Amarum. Ruach is roughly 200 kilometers in diameter; the whole ….
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