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On the Robustness of Phosphine Signatures in Venus' Clouds
Jane S. Greaves, William Bains, Janusz J. Petkowski +8
We published spectra of phosphine molecules in Venus' clouds, following open-science principles in releasing data and scripts (with community input leading to ALMA re-processing, n…
Re-analysis of Phosphine in Venus' Clouds
Jane S. Greaves, Anita M. S. Richards, William Bains +7
We first respond to two points raised by Villanueva et al. We show the JCMT discovery spectrum of PH3 can not be re-attributed to SO2, as the line width is larger than observed for…
Phosphine Gas in the Cloud Decks of Venus
Jane S. Greaves, Anita M. S. Richards, William Bains +16
Measurements of trace-gases in planetary atmospheres help us explore chemical conditions different to those on Earth. Our nearest neighbor, Venus, has cloud decks that are temperat…
The Venusian Lower Atmosphere Haze as a Depot for Desiccated Microbial Life: A Proposed Life Cycle for Persistence of the Venusian Aerial Biosphere
Sara Seager, Janusz J. Petkowski, Peter Gao +4
We revisit the hypothesis that there is life in the Venusian clouds to propose a life cycle that resolves the conundrum of how life can persist aloft for hundreds of millions to bi…
Phosphine on Venus Cannot be Explained by Conventional Processes
William Bains, Janusz J. Petkowski, Sara Seager +6
The recent candidate detection of ~1 ppb of phosphine in the middle atmosphere of Venus is so unexpected that it requires an exhaustive search for explanations of its origin. Phosp…
Photochemistry of Anoxic Abiotic Habitable Planet Atmospheres: Impact of New HO Cross-Sections
Sukrit Ranjan, Edward W. Schwieterman, Chester Harman +4
We present a study of the photochemistry of abiotic habitable planets with anoxic CO-N atmospheres. Such worlds are representative of early Earth, Mars and Venus, and analo…