June 20, 2019 updates Posted on June 20, 2019June 28, 2020 by Doug Loss Toward Autonomous Navigation of Spacecraft on the Observed Periodic Radiation of Pulsars http://matisaac.org/images/PaperPDF/AdAp_100126_2019052717111204142.pdf Towards a General Definition of Life https://link.springer.com/article/10.1007/s11084-019-09578-5 Formation Design of Distributed Telescopes in Earth Orbit for Astrophysics Applications https://arc.aiaa.org/doi/10.2514/1.A34420 Retrieval of the Fluid Love Number k 2 in Exoplanetary Transit Curves https://iopscience.iop.org/article/10.3847/1538-4357/ab2048 The Breakthrough Listen Search for Intelligent Life: Observations of 1327 Nearby Stars over 1.10-3.45 GHz https://arxiv.org/abs/1906.07750 Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b: I. Cloud and chemistry mapping https://arxiv.org/abs/1906.08127 A Recommendation Algorithm to Predict Giant Exoplanet Host Stars Using Stellar Elemental Abundances https://arxiv.org/abs/1805.12144