December 17, 2020 updates Posted on December 17, 2020 by Doug Loss JPL Work on a Gravitational Lensing Mission https://www.centauri-dreams.org/2020/12/16/jpl-work-on-a-gravitational-lensing-mission/ Solid tidal friction in multi-layer planets: Application to Earth, Venus, a Super Earth and the TRAPPIST-1 planets – Potential approximation of a multi-layer planet as a homogeneous body https://www.aanda.org/articles/aa/abs/2020/12/aa38204-20/aa38204-20.html The Planet as Exoplanet Analog Spectrograph (PEAS): Design and First-Light https://arxiv.org/abs/2012.08675 Revisiting KELT-19Ab, WASP-156b and WASP-121b in the TESS Era https://arxiv.org/abs/2012.08744 Non-Sinusoidal Transit Timing Variations for the Exoplanet HAT-P-12b https://arxiv.org/abs/2012.08820 Update on the Preliminary Design of SCALES: the Santa Cruz Array of Lenslets for Exoplanet Spectroscopy https://arxiv.org/abs/2012.09098