May 25, 2021 updates Posted on May 25, 2021 by Doug Loss Encyclopedia of Astrobiology https://link.springer.com/referencework/10.1007/978-3-642-27833-4 Humanity should colonize space in order to survive but not with embryo space colonization https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/abs/humanity-should-colonize-space-in-order-to-survive-but-not-with-embryo-space-colonization/474332A09E34142E77684A49B95A7684 Space ectogenesis: securing survival of humans and Earth life with minimal risks – reply to Szocik https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/space-ectogenesis-securing-survival-of-humans-and-earth-life-with-minimal-risks-reply-to-szocik/CB361AEA98A8FB7672DA9F79E383DD60 Where is the Water? Jupiter-like C/H ratio but strong H2O depletion found on τ Boötis b using SPIRou https://arxiv.org/abs/2105.10513 Decomposing the Iron Cross-Correlation Signal of the Ultra-Hot Jupiter WASP-76b in Transmission using 3D Monte-Carlo Radiative Transfer https://arxiv.org/abs/2105.11034 Redox hysteresis of super-Earth exoplanets from magma ocean circulation https://arxiv.org/abs/2105.11208 Stellar winds and planetary atmospheres https://arxiv.org/abs/2105.11243 Relativistic light sails need to billow https://arxiv.org/abs/2105.10849