Feb. 22 (UPI) -- Researchers in France have explained the large dune-like patterns found on the surface of comet 67P/Churyumov-Gerasimenko.
Images collected by the now-retired Rosetta probe and its OIRIS camera revealed the presence of dune-like patterns on the comet's two lobes and the neck connecting them. Images of the same location, photographed at different times, showed the dunes are on the move.