July 16,2018 updates Posted on July 16, 2018June 28, 2020 by Doug Loss Space Nuclear Power Systems – Direct Fusion Drive https://arc.aiaa.org/doi/pdf/10.2514/6.2018-4974 Implications of Tides for Life on Exoplanets https://www.liebertpub.com/doi/10.1089/ast.2017.1718 The Inner Solar System’s Habitability Through Time https://arxiv.org/abs/1807.04776 Gravitational Waves From Ultra Short Period Exoplanets https://arxiv.org/abs/1807.04877 Robust Transiting Exoplanet Radii in the Presence of Starspots from Ingress and Egress Durations https://arxiv.org/abs/1807.04886 Exoplanet Atmosphere Measurements from Direct Imaging https://arxiv.org/abs/1807.05136