These Gullies On Mars Look Carved - We Might Finally Know What Created Them

Mars is a desert planet with dunes, canyons, and surprisingly fast winds. It is very cold, though, so it does not often get compared to desert planets of fiction, like Tatooine of Star Wars or Arrakis of Dune. But a mysterious feature made astronomers consider a parallel with the Dune planet, gullies carved in Martian sands looked dug by giant sandworms. Is Shai-Hulud behind the Martian mystery? Of course, not, but something did create them, and scientists now have a potential idea of what that was! The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

The team believes that it is blocks of dry ice that have carved these structures. The thin atmosphere of Mars is almost completely carbon dioxide, and during winter, the already cold planet ge