Astrobiology

Ammonia and Phosphine in the Clouds of Venus as Potentially Biological Anomalies – Cleland et al. – preprint

Recovery of Microbes from Subsurface Europa Analog Environments: An Efficient Mechanical–Thermal Probe for Collecting Biological Samples from the Subsurface of Icy Moons – Davis et al. – Astrobiology

Recovery of Phosphine in Venus’ Atmosphere from SOFIA Observations – Greaves et al. – preprint

Inner Habitable Zone Boundary for Eccentric Exoplanets – Ji et al. – preprint

Spectropolarimetry as a Means to Address Cloud Composition and Habitability for a Cloudy Exoplanetary Atmosphere in the Habitable Zone – West et al. – preprint

Bioinformatics

Obligate Endosymbiosis Explains Genome Expansion During Eukaryogenesis – Dunk et al. – preprint

Biophysics

A liquid crystal world for the origins of life – Jia et al. – Emerging Topics in Life Sciences

Planetary Sciences

Liquid and supercritical CO2 as an organic solvent in Hadean seafloor hydrothermal systems: implications for prebiotic chemical evolution – Shibuya et al. – Progress in Earth and Planetary Science

Planetary Caves: A Solar System View of Processes and Products – Wynne et al. – Journal of Geophysical Research: Planets

Fundamental Science and Engineering Questions in Planetary Cave Exploration – Wynne et al. – Journal of Geophysical Research: Planets