By comparison, the Hubble Space Telescope, in its 35 years of service, has created over 400 terabytes in total. At present, the Roman Space Telescope 's launch aboard a SpaceX Falcon Heavy rocket is scheduled to occur on Aug. 30 at 7:26 a.m. EDT (1126 GMT). The Roman Space Telescope's inauguration into NASA's fleet of observatories will mark a pretty big moment for the advancement of astronomy. It will work as a complement to other major telescopes, including the James Webb Space Telescope (JWST). Members of NASA's Nancy Grace Roman Space Telescope propellant, safety, and quality assurance team pose for a photo on July 20 prior to technicians loading propellant into the observatory.