[NASA/JPL-Caltech/UA] Many impact craters on Mars were filled with ice in past climates. Sometimes this ice flows or slumps down the crater walls into the center and acquires concentric wrinkles […]
polygonal terrain
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Dale Andersen’s Astrobiology Antarctic Research: Permafrost And Ground-ice Conditions in the Untersee Oasis, Queen Maud Land, East Antarctica (Paper)
Keith’s note: Astrobiologist Dale Andersen is back in Antarctica at Lake Untersee in October-December 2024 for another field season of research (preview). Dale’s work is coordinated through the SETI Institute. […]
Posted inArctic / Antarctic / Alpine, Astrogeology, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Mars, Status Report
Defrosting Dunes On Mars
This image shows a field of sand dunes in the Martian springtime while the seasonal carbon dioxide frost is sublimating into the air. This sublimation process is not at all […]