537: Reusable Rocket Revolution Astronomy Cast 537: Reusable Rocket Revolution by Fraser Cain & Dr. Pamela Gay We took a hiatus this summer, but SpaceX sure didn\u2019t, with the tests of the Starhopper prototype. Today we\u2019re going to talk about the revolution in reusable rocketry and quest to build a fully reusable two-stage rocket.