The long-awaited astrophysics decadal survey, Astro2020, is now here. It calls on NASA to start on a large space telescope for launch in the 2040s, as part of bigger multi-decade program that will later include far-IR and X-ray telescopes. https://t.co/ysnBtGfNGK
— Jeff Foust (@jeff_foust) November 4, 2021