April 9, 2018 updates Posted on April 9, 2018June 28, 2020 by Doug Loss The Gravitational Threshold of Spacefaring Civilizations http://geopolicraticus.tumblr.com/post/172681556712/the-gravitational-threshold-of-spacefaring Space Exploration: It’s Impact on Society–A Critical Review http://www.ijater.com/files/NCRTSTM_01_18.pdf The Traveling-Wave Tube in the History of Telecommunication https://arxiv.org/abs/1803.11497 Spacedrives and Conservation Laws https://arc.aiaa.org/doi/full/10.2514/1.A34116 Escape and fractionation of volatiles and noble gases from Mars-sized planetary embryos and growing protoplanets https://www.sciencedirect.com/science/article/pii/S0019103517301677 The First Naked-Eye Superflare Detected from Proxima Centauri https://arxiv.org/abs/1804.02001 A HARDCORE model for constraining an exoplanet’s core size https://arxiv.org/abs/1804.02019 Giant planets: good neighbors for habitable worlds? https://arxiv.org/abs/1804.02183 K-Stacker: Keplerian image recombination for the direct detection of exoplanets https://arxiv.org/abs/1804.02192 Using asteroseismology to characterise exoplanet host stars https://arxiv.org/abs/1804.02214 Low mass planet migration in magnetically torqued dead zones – II. Flow-locked and runaway migration, and a torque prescription https://arxiv.org/abs/1804.02290 Formation of the terrestrial planets in the solar system around 1 au via radial concentration of planetesimals https://arxiv.org/abs/1804.02361