Mars

The Curiosity rover has detected seasonally varying levels of methane in Gale crater on Mars, which could have geological or astrobiological sources. The ExoMars Trace Gas Orbiter (TGO) spacecraft has detected no methane on Mars despite…

The scientific exploration of Mars over the past several decades has resulted in increasing evidence that the martian surface hosted habitable environments early in its history, as well as evidence of the building blocks of life in the form…

SummaryNASA's Perseverance rover will soon begin its primary scientific task: drilling out finger-size cores of martian rock for return to Earth. If all goes well, the first drilling sample will be collected from Jezero crater, a former…

SummaryThe interior of a planet holds important clues to its origin and thermal and dynamic evolution. Exploring a planet's deeper layers can reveal how a planet accreted and differentiated into layers, whether its core sustains a geodynamo…

Single seismometer structureBecause of the lack of direct seismic observations, the interior structure of Mars has been a mystery. Khan et al., Knapmeyer-Endrun et al., and Stähler et al. used recently detected marsquakes from the…

Brine-driven destruction of clay minerals in Gale crater, Mars By T. F. Bristow, J. P. Grotzinger, E. B. Rampe, J. Cuadros, S. J. Chipera, G. W. Downs, C. M. Fedo, J. Frydenvang, A. C. McAdam, R. V. Morris, C. N.…