“THE SURFACE (of Comet 67P) IS QUITE COMPLEX AND VARIABLE, WITH A FEW STRUCTURES THAT REMIND ONE OF MARS.”
“In addition, data gathered from Philae for two separate imaging studies also has researchers reporting that most of comet C-G’s landscape has been shaped by erosion, giving the surface of the comet many features that Ulamec, the leader of the Philae lander team, says look a bit “Martian.” (note 1)