February 23, 2021 updates Posted on February 23, 2021 by Doug Loss Are There Transit Timing Variations for the Exoplanet Qatar-1b? https://iopscience.iop.org/article/10.3847/1538-3881/abd4d8 The TESS–Keck Survey. IV. A Retrograde, Polar Orbit for the Ultra-low-density, Hot Super-Neptune WASP-107b https://iopscience.iop.org/article/10.3847/1538-3881/abd177 A Multiwavelength Look at the GJ 9827 System: No Evidence of Extended Atmospheres in GJ 9827b and d from HST and CARMENES Data https://iopscience.iop.org/article/10.3847/1538-3881/abdb2f Photochemical modelling of atmospheric oxygen levels confirms two stable states https://www.sciencedirect.com/science/article/pii/S0012821X21000777 Effects of the IMF direction on atmospheric escape from a Mars‐like planet under weak intrinsic magnetic field conditions https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JA028485 Automated identification of transiting exoplanet candidates in NASA Transiting Exoplanets Survey Satellite (TESS) data with machine learning methods https://arxiv.org/abs/2102.10326