December 23, 2021 updates Posted on December 23, 2021 by Doug Loss A rich population of free-floating planets in the Upper Scorpius young stellar association https://www.nature.com/articles/s41550-021-01513-x High-resolution detection of neutral oxygen and non-LTE effects in the atmosphere of KELT-9b https://www.nature.com/articles/s41550-021-01544-4 A Mid-infrared Study of Directly Imaged Planetary-mass Companions Using Archival Spitzer/IRAC Images https://iopscience.iop.org/article/10.3847/1538-3881/ac3745 Exploring the Effects of Active Magnetic Drag in a Gener\al Circulation Model of the Ultrahot Jupiter WASP-76b https://iopscience.iop.org/article/10.3847/1538-3881/ac3746 Planet interactions at a young age https://onlinelibrary.wiley.com/doi/10.1002/asna.20210097 Analytical Modelling of Exoplanet Transit Specroscopy with Dimensional Analysis and Symbolic Regression https://arxiv.org/abs/2112.11600 Semi-Transparent Shear Turbulence in Hot Jupiter Atmospheres https://arxiv.org/abs/2112.12127