June 5, 2019 Updates Posted on June 5, 2019June 28, 2020 by Doug Loss Detection of ammonia on Pluto’s surface in a region of geologically recent tectonism https://advances.sciencemag.org/content/5/5/eaav5731 Surface properties of large TNOs: Expanding the study to longer wavelengths with the James Webb Space Telescope https://arxiv.org/abs/1905.12320 Effects of dust evolution on protoplanetary disks in the mid-infrared https://www.aanda.org/articles/aa/abs/2019/06/aa34365-18/aa34365-18.html Review on Solar Sail Technology https://link.springer.com/article/10.1007/s42064-019-0038-x Two accreting protoplanets around the young star PDS 70 https://www.nature.com/articles/s41550-019-0780-5 SETI in Russia, USSR and the post-Soviet space: a century of research https://www.sciencedirect.com/science/article/pii/S0094576518318393