Here's Something We Never Thought We'd See on a Comet: Shifting Dunes

The Rosetta mission's close-up views of the curiously-shaped Comet 67P/Churyumov-Gerasimenko have already changed some long-held ideas about comets. But here's more: there's a 'wind' blowing across the comet's surface, creating moving shifting dunes. "The approach to comet 67P/Churyumov-Gerasimenko by the spacecraft Rosetta has revealed the presence of astonishing dune-like patterns," wrote Philippe Claudin, of the […] The post Here’s Something We Never Thought We’d See on a Comet: Shiftin...