May 17, 2018 updates Posted on May 17, 2018June 28, 2020 by Doug Loss Radiation Pressure on a Diffractive Sailcraft https://arxiv.org/abs/1703.02940 Measurements of Radiation Pressure owing to the Grating Momentum https://arxiv.org/abs/1804.04774 Flying on a Rainbow: A Solar-Driven Diffractive Sailcraft https://arxiv.org/abs/1805.05864 Expanding cosmological civilizations on the back of an envelope https://arxiv.org/abs/1805.06329 1I/2017 ‘Oumuamua-like Interstellar Asteroids as Possible Messengers from the Dead Stars https://arxiv.org/abs/1801.02658 Inner Super-Earths, Outer Gas Giants: How Pebble Isolation and Migration Feedback Keep Jupiters Cold https://arxiv.org/abs/1803.03648