Mars dust storm captured by ESA’s Mars Express near the north polar ice cap. Credits: ESA/DLR/FU Berlin (larger image) The current image of Mars as an arid and hostile desert

Cosmic dust analogue on a chip. The cocktail of chemicals was collected on a microchip. Photo: Fiona Wolf A Sydney PhD student has recreated a tiny piece of the Universe

Orgueil Carbonaceous Chondrite – Wikipedia The uneven detection of prebiotic organic compounds in meteorites—where amino acids and nucleobases are commonly identified but sugars remain rare and poorly characterized—limits our understanding

A schematic of the key processes included in our abiotic Earth model. Remotely observable quantities (surface temperature, albedo, and atmospheric H2O and CO2) are in bold. Volatile cycling is diagrammed

Keith Cowing Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) 🖖🏻 Follow on

Comparison of the posteriors (solid lines) from our four different fiducial models, labeled inset. The dashed-lines represent the likelihood functions of each, and the solid grey line is the prior