September 15, 2021 updates Posted on September 15, 2021 by Doug Loss High Altitude Limits of Living Things https://liebertpub.com/doi/10.1089/ham.2020.0212 Intermittent Signals and Planetary Days in SETI https://arxiv.org/abs/2109.06175 Not the Birth Cluster: the Stellar Clustering that Shapes Planetary Systems is Generated by Galactic-Dynamical Perturbations https://arxiv.org/abs/2109.06182 Probing the atmosphere of WASP-69 b with low- and high-resolution transmission spectroscopy https://arxiv.org/abs/2109.06335 Modons on Tidally Synchronised Extrasolar Planets https://arxiv.org/abs/2109.06568