May 9, 2019 updates Posted on May 9, 2019June 28, 2020 by Doug Loss The Transiting Multi-planet System HD15337: Two Nearly Equal-mass Planets Straddling the Radius Gap https://iopscience.iop.org/article/10.3847/2041-8213/ab17d9 Habitable Megastructures Versus Habitable Planets https://www.researchgate.net/publication/332751346_Astrobiology_Newsletter_Vol_12_No_2 Future of Space Travel Through VARIES and VASIMR https://www.semanticscholar.org/paper/FUTURE-OF-SPACE-TRAVEL-THROUGH-VARIES-AND-VASIMR-Salim-SarathRajN./a468da861ab604f59ecc198d135088bedc1837e8 Heliogyro Solar Sail Structural Dynamics and Stability https://arc.aiaa.org/doi/10.2514/1.G003758 Retrieval of the fluid Love number k2 in exoplanetary transit curves https://arxiv.org/abs/1905.03171 Persistence of Technosignatures: A Comment on Lingam and Loeb https://arxiv.org/abs/1905.03146 Effect of interstellar objects on metallicity of low-mass first stars formed in a cosmological model https://arxiv.org/abs/1905.02974 Photochemical hazes in sub-Neptunian atmospheres with focus on GJ 1214 b https://arxiv.org/abs/1905.02976