October 24, 2018 updates Posted on October 24, 2018June 28, 2020 by Doug Loss Compact Multi-planet Systems are more Common around Metal-poor Hosts http://iopscience.iop.org/article/10.3847/2041-8213/aae710 Science with an ngVLA: Observing the Effects of Chemistry on Exoplanets and Planet Formation https://arxiv.org/abs/1810.09550