63 citations · 138 across the 4 of their papers we have counts for
4 papers
Impact Craters and the Observability of Ancient Martian Shorelines
Mark Baum, Steven Sholes, Andrew Hwang
The existence of possible early oceans in the northern hemisphere of Mars has been researched and debated for decades. The nature of the early martian climate is still somewhat mys…
Anoxic Atmospheres on Mars Driven by Volcanism: Implications for Past Environments and Life
Steven F. Sholes, Megan L. Smith, Mark W. Claire +2
Mars today has no active volcanism and its atmosphere is oxidizing, dominated by the photochemistry of CO2 and H2O. Using a one-dimensional photochemical model, we consider whether…
A Maximum Subsurface Biomass on Mars from Untapped Free Energy: CO and H2 as Potential Antibiosignatures
Steven F. Sholes, Joshua Krissansen-Totton, David C. Catling
Whether extant life exists in the martian subsurface is an open question. High concentrations of photochemically produced CO and H2 in the otherwise oxidizing martian atmosphere re…
Transient Sulfate Aerosols as a Signature of Exoplanet Volcanism
Amit Misra, Joshua Krissansen-Totton, Matthew C. Koehler +1
Geological activity is thought to be important for the origin of life and for maintaining planetary habitability. We show that transient sulfate aerosols could be a signature of ex…