October 12, 2020 updates Posted on October 12, 2020 by Doug Loss Exoplanet Hunting in Deep Space with Machine Learning https://www.journals.resaim.com/ijresm/article/view/323 Propulsion for Spacecrafts using on-board Laser Reflection and Absorption https://engrxiv.org/fh6ez/ Sun-as-a-star Spectral Irradiance Observations of Transiting Active Regions https://iopscience.iop.org/article/10.3847/1538-4357/abadf9 Towards a more complex description of chemical profiles in exoplanets retrievals: A 2-layer parameterisation https://arxiv.org/abs/1903.11180 Direct confirmation of the radial-velocity planet β Pic c https://arxiv.org/abs/2010.04442 Solid tidal friction in multi-layer planets: Application to Earth, Venus, a Super Earth and the TRAPPIST-1 planets. Can a multi-layer planet be approximated as a homogeneous planet? https://arxiv.org/abs/2010.04587 Europium as a lodestar: diagnosis of radiogenic heat production in terrestrial exoplanets https://arxiv.org/abs/2010.04632