June 29, 2022 updates Posted on June 29, 2022 by Doug Loss NASA’s New Hubble E-Book Takes Readers on a Journey to Curious Worlds https://www.nasa.gov/feature/goddard/2022/nasas-new-hubble-e-book-takes-readers-on-a-journey-to-curious-worlds Using birefringent elements and imaging Michelsons for the calibration of high-precision planet-finding spectrographs https://www.aanda.org/articles/aa/full_html/2022/06/aa41657-21/aa41657-21.html Optimal mass and speed for interstellar flyby with directed-energy propulsion https://arxiv.org/abs/2206.13929 Constraining the Planet Occurrence Rate around Halo Stars of Potentially Extragalactic Origin https://arxiv.org/abs/2206.13556 Forming short period sub-stellar companions in 47 Tucanae — II. Analytic expressions for the orbital evolution of planets in dense environments https://arxiv.org/abs/2206.13558