Portal Space Systems Raises $17.5M Seed Round to Demonstrate Supernova Transorbital Spacecraft, Targets 2026 Launch

Portal Space Systems raised $17.5 million in an oversubscribed seed round to fund full-scale demonstration and production scaling of its Supernova transorbital spacecraft, which uses a 3D-printed solar-thermal Hex Thruster for rapid orbital transfers and flexible payloads.

JJeff Thornburg PPortal Space