February 18, 2021 updates Posted on February 18, 2021 by Doug Loss A Simplified Photodynamical Model for Planetary Mass Determination in Low-eccentricity Multitransiting Systems https://iopscience.iop.org/article/10.3847/1538-4357/abc87a Survival of desert algae Chlorella exposed to Mars-like near space environment https://www.sciencedirect.com/science/article/abs/pii/S221455242100016X Metastable Helium Reveals an Extended Atmosphere for the Gas Giant HAT-P-18b https://arxiv.org/abs/2102.08392 On the Capture of Interstellar Objects by our Solar System https://arxiv.org/abs/2102.08488 Can planets be pushed into a disc inner cavity by a resonant chain? https://arxiv.org/abs/2102.08612 Higher Compact Multiple Occurrence Around Metal-Poor M-Dwarfs and Late K-Dwarfs https://arxiv.org/abs/2102.08839 HD 76920b pinned down: a detailed analysis of the most eccentric planetary system around an evolved star https://arxiv.org/abs/2102.08902