NASA
11th June 2013, 18:10
http://solarsystem.nasa.gov/multimedia/gallery/PIA17260-Fig1_Russell-linears-annotated_160X1201.jpg (http://solarsystem.nasa.gov/news/display.cfm?News_ID=43969)10 Jun 2013 - Marks on Martian Dunes May Be Tracks Of Dry-Ice Sleds
NASA research indicates hunks of frozen carbon dioxide -- dry ice -- may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go.
More... (http://solarsystem.nasa.gov/news/display.cfm?News_ID=43969)
NASA research indicates hunks of frozen carbon dioxide -- dry ice -- may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go.
More... (http://solarsystem.nasa.gov/news/display.cfm?News_ID=43969)