February 27, 2020 updates Posted on February 27, 2020June 28, 2020 by Doug Loss A probabilistic analysis of the Fermi paradox in terms of the Drake formula: the role of the L factor https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staa512/5741733 Grand challenges for nanophotonics: Steering and riding light https://authors.library.caltech.edu/101355/ Energy-sensitive Detectors for Astronomy: Past, Present and Future https://www.sciencedirect.com/science/article/pii/S1387647320300038 High-Energy and High-Quality Ion beams in Light Sail Acceleration https://arxiv.org/abs/2002.11563 The interior and atmosphere of the habitable-zone exoplanet K2-18b https://arxiv.org/abs/2002.11115 Fingerprints of giant planets in the composition of solar twins https://arxiv.org/abs/2002.11135 Can planetary rings explain the extremely low density of HIP 41378f? https://arxiv.org/abs/2002.11422