Portal Space Systems, Founded by Ex-SpaceX Propulsion VP Jeff Thornburg, Unveils Supernova Bus with 6 km/s Delta‑V and 50x Mobility Boost

Portal Space Systems, led by former SpaceX propulsion VP Jeff Thornburg, unveiled the Supernova satellite bus to provide rapid, long-range in-space maneuverability for defense and logistics, claiming a 50x mobility improvement and 6 km/s delta-v. The 500 kg, payload-agnostic bus uses solar thermal propulsion and aims for a demonstration launch in 2025 after a year-and-a-half of collaboration with the U.S. Space Force.

JJeff Thornburg PPortal Space