May 11, 2021 updates Posted on May 11, 2021 by Doug Loss EXOPLANETS AND SPACECRAFT Exercises in astronomy and space exploration for high school students http://fiztan.phd.elte.hu/files/written_mat/astronomy_ex.pdf Relativistically into finance https://www.repository.utl.pt/handle/10400.5/21262 Venus, an Astrobiology Target https://liebertpub.com/doi/10.1089/ast.2020.2268 Experimental Determination of Mantle Solidi and Melt Compositions for Two Likely Rocky Exoplanet Compositions https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JE006731 Long Period Jovian Tilts the Orbits of Two sub-Neptunes Relative to Stellar Spin Axis in Kepler-129 https://arxiv.org/abs/2105.03446 The orbital evolution of resonant chains of exoplanets incorporating circularisation produced by tidal interaction with the central star with application to the HD 158259 and EPIC 245950175 systems https://arxiv.org/abs/2105.03652 Systematic search for long-term transit duration changes in Kepler transiting planets https://arxiv.org/abs/2105.04318 An interstellar communication method: system design and observations https://arxiv.org/abs/2105.03727 The Drake Equation at 60: Reconsidered and Abandoned https://arxiv.org/abs/2105.03984