[NASA] Boulder-size blocks of water ice can be seen around the rim of this giant meteoroid impact crater on Mars, as viewed by the High-Resolution Imaging Science Experiment (HiRISE camera) […]
Mars
Posted inMars
Zhurong Mars Rover Observations Primary Evaporite In Southern Utopia Planitia
[Nature] The Zhurong rover has identified a layer consisting of platy rocks enriched in hydrous minerals on a ~0.76-Ga surface in southern Utopia Planitia, indicating unexpected recent aqueous activity on […]
Posted inImaging & Spectroscopy
ESCAPADE Departure Angle View Of Earth And Luna
[NASA]. On July 3, one of NASA’s two Mars-destined ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) spacecraft captured photos of Earth and the Moon in visible and thermal infrared […]
Posted inMars
ExoMars Rosalind Franklin Rover Recon: Geological History Of Oxia Planum
[NASA] This crater contains exposures in the rim that can corroborate prevailing hypotheses for Oxia Planum’s geologic history ahead of the ExoMars Rosalind Franklin rover’s landing, currently planned for 2030. […]
Posted inMars
Mars Curiosity Blog Sols 4968-4974: Rock Climbing Towards the Discontinuity
[NASA] Curiosity has been exploring a large-scale feature in Gale’s sedimentary record suspected to be an “erosional supersurface.” The “supersurface” represents a period in time when a net depositional environment […]
Posted inMars
Crustal Water Reservoir On Early Mars
[Geophysical Research Letters]. The next great leap in Martian exploration is the return of samples to Earth. Maximizing their scientific value requires non-destructive analytical techniques for early three-dimensional characterization.
Posted inMars
Cracks In A Martian Crater’s Ice
[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 […]
Posted inNASA Astrobiology Program
Astrobiology: Fifty Years After Viking: New Special Collection Available Now
Guest edited by Dr. Scott M. Perl (LA-NHM) and Dr. Mary Beth Wilhelm (NASA Ames) To mark the 50th anniversary of NASA’s Viking landings, the journal Astrobiology has published a […]
Posted inMars
Martian Geology: Possible Evidence Of Glacial Processes
At the southern section of the floor of an impact crater is this stunning lobate (tongue-shaped) debris apron with surface banding showing high sinuosity.
![Graphical illustration showing planetary bodies (not to scale) where H2O2 has been detected, the major production pathways of H2O2, and its role in a few examples of prebiotic chemical networks. -- [Fundamental Research]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Hydrogen-peroxide-1.png?resize=1200%2C716&ssl=1)
Posted inBiosignatures & Paleobiology
Hydrogen Peroxide On Mars And Icy Moons: Implications For The Search For Extraterrestrial Signatures Of Prebiotic Chemistry
[Fundamental Research]. Hydrogen peroxide (H2O2) is increasingly recognized as an important molecule in prebiotic chemistry that potentially had a large impact on life’s early evolution.