TagsAeolis Mons Arizona State University ASU atmosphere Beautiful Mars Cape Tribulation channels clouds craters Curiosity dunes dust Endeavour Crater Gale Crater High Resolution Imaging Science Experiment HiRISE Malin Space Science Systems Marathon Valley MARCI Mars Color Imager Mars Exploration Rover Mars Odyssey Mars Reconnaissance Orbiter Mars Science Laboratory mass wasting MER Mount Sharp MRO MSL MSSS Murray Formation NASA Opportunity sand dunes Stimson Formation storms THEMIS THEMIS Image of the Day Thermal Emission Imaging System University of Arizona Valles Marineris Vera Rubin Ridge volcanics weather wind
- CRISM: Compact Reconnaissance Imaging Spectrometer for Mars
- CTX: Context Camera
- HiRISE: High Resolution Imaging Science Experiment
- MARSIS: Mars Advanced Radar for Subsurface and Ionosphere Sounding
- SHARAD: Shallow Radar
- THEMIS: Thermal Emission Imaging System
- All Mars missions list
- Mars 2020 Rover
- Mars Atmosphere and Volatile Evolution Mission (MAVEN)
- Mars Exploration Rovers (MER)
- Mars Express (MEX)
- Mars Odyssey
- Mars Orbiter Mission (MOM) / Mangalyaan
- Mars Reconnaissance Orbiter (MRO)
- Mars Science Laboratory (MSL)
Tag Archives: dune gullies
Gullies on Martian sand dunes, like these in Matara Crater, have been very active, with many flows in the last ten years. The flows typically occur when seasonal frost is present. Here, we see frost in and around two gullies, … Continue reading
NASA’s Mars Exploration Rover Opportunity has reached the main destination of its current two-year extended mission — an ancient fluid-carved valley incised on the inner slope of a vast crater’s rim. As the rover approached the upper end of “Perseverance … Continue reading
The giant sand dunes in Kaiser Crater experience gully erosion of the steep slip faces every year in late winter as the sun warms these slopes and seasonal carbon dioxide frost sublimates (meaning it changes from a solid to gas). … Continue reading
Like silk — Dune gullies in the Argyre region. Beautiful Mars series.
Gully and defrosting activity have been visible here along the edge of a dune field, along with blocks of frost. Observations of the same area help us check for repeat activity, as well as measuring those meter-scale blocks that we’ve … Continue reading
Changes among the Russell Crater dunes and gullies. Beautiful Mars series.
Monitor changes among the Russell Crater dunes and gullies. [Image at right cropped] More HiRISE images.
Beautiful Mars series: Melt. More Beautiful Mars images.