April 23, 2019 updates Posted on April 23, 2019June 28, 2020 by Doug Loss Interstellar travels aboard radiation powered rockets https://journals.aps.org/prd/accepted/fe07dQa3Ocd11b24316b3a9841e784ec625ddfacc An Updated Model for Circumbinary Planets Orbiting the sdB Binary NY Virginis https://iopscience.iop.org/article/10.3847/1538-3881/ab1139 SETI in Russia, USSR and the post-Soviet space: A century of research https://www.sciencedirect.com/science/article/pii/S0094576518318393 Exoplanet Reflected Light Spectroscopy with PICASO https://arxiv.org/abs/1904.09355 Vertical Tracer Mixing in Hot Jupiter Atmospheres https://arxiv.org/abs/1904.09676 Constraints on a Putative Planet Sculpting the V4046 Sagittarii Circumbinary Disk https://arxiv.org/abs/1904.09866