May 23, 2023 updates Posted on May 23, 2023 by Doug Loss Distance pattern and spacing of the multiplanet systems in TESS data https://iopscience.iop.org/article/10.1088/1755-1315/1167/1/012005 Deep Space Navigation by Optical Pulsars https://arc.aiaa.org/doi/10.2514/1.G007282 First contact: Global team to simulate message from extraterrestrial intelligence to Earth https://phys.org/news/2023-05-contact-global-team-simulate-message.html The Next Generation Arecibo Telescope: A preliminary study https://arxiv.org/abs/2305.07780 Orbital Decay of Hot Jupiters due to Weakly Nonlinear Tidal Dissipation https://arxiv.org/abs/2305.11974