January 17, 2023 updates Posted on January 17, 2023January 19, 2023 by Doug Loss Laser desorption mass spectrometry with an Orbitrap analyser for in situ astrobiology https://www.nature.com/articles/s41550-022-01866-x A Mixed Stirring Mechanism for Debris Discs with Giant and Dwarf Planetary Perturbations https://arxiv.org/abs/2301.05265 Nonprofit Adopt a Star: Lessons from 15 years of Crowdfunding https://arxiv.org/abs/2301.05598