April 05, 2023 updates Posted on April 5, 2023 by Doug Loss Linking Methanogenesis in Low-Temperature Hydrothermal Vent Systems to Planetary Spectra: Methane Biosignatures on an Archean-Earth-like Exoplanet https://liebertpub.com/doi/10.1089/ast.2022.0127 AF Lep b: The lowest-mass planet detected by coupling astrometric and direct imaging data https://www.aanda.org/articles/aa/full_html/2023/04/aa45865-23/aa45865-23.html LHS 475 b: A Venus-sized Planet Orbiting a Nearby M Dwarf https://arxiv.org/abs/2304.01920