July 8, 2020 updates Posted on July 8, 2020 by Doug Loss A systematic study of CO2 planetary atmospheres and their link to the stellar environment https://academic.oup.com/mnras/article-abstract/doi/10.1093/mnras/staa1929/5868818 Cometary panspermia and origin of life? https://www.sciencedirect.com/science/article/abs/pii/S0065266020300067 The efficient Lamarckian spread of life in the cosmos https://www.sciencedirect.com/science/article/abs/pii/S0065266020300079 Photonic Metasurfaces as Relativistic Light Sails for Doppler‐Broadened Stable Beam‐Riding and Radiative Cooling https://onlinelibrary.wiley.com/doi/10.1002/lpor.201900311 Arid or Cloudy: Characterizing the Atmosphere of the super-Earth 55 Cancri e using High-Resolution Spectroscopy https://arxiv.org/abs/2007.03115 A review of possible planetary atmospheres in the TRAPPIST-1 system https://arxiv.org/abs/2007.03334 Habitability of the early Earth: Liquid water under a faint young Sun facilitated by strong tidal heating due to a nearby Moon https://arxiv.org/abs/2007.03423 Sailing Towards the Stars Close to the Speed of Light https://arxiv.org/abs/2007.03530 The Cathedral and the Starship: Learning from the Middle Ages for Future Long-Duration Projects https://arxiv.org/abs/2007.03654 Terrestrial Planets Comparative Climatology (TPCC) mission concept https://arxiv.org/abs/2007.03049 A search for rotation periods in 1000 TESS objects of interest https://arxiv.org/abs/2007.03079