NASA satellite will test orbital 'gas station' tech to help astronauts reach the moon and Mars

NASA’s Liquid Oxygen Flight demonstration (LOXSAT) satellite will launch to low Earth orbit (LEO) no earlier than July 17, 2024, aboard Rocket Lab’s Electron rocket from the company’s New Zealand facilities. The mission will test 11 cryogenic fluid management technologies over nine months, focusing on storing and transferring super-chilled liquid oxygen—a key challenge in microgravity environments. NASA describes these depots as potential ‘gas stations in space,’ essential for long-duration missions like the Artemis program’s lunar landings and future crewed trips to Mars. LOXSAT’s success hinges on maintaining cryogenic fuels at precise temperatures to prevent boiling, a process complicated by the lack of gravity in space. The satellite will evaluate fluid transfer methods between spacecraft, a capability required for NASA’s upcoming lunar landers, which rely on cryogenic propellants for surface missions and return trips. Both SpaceX’s Starship and Blue Origin’s Blue Moon landers, under NASA’s Human Landing System contracts, depend on on-orbit refueling to complete their missions. The project is a collaboration between NASA and Eta Space of Rockledge, Florida, selected under NASA’s Tipping Point initiative. This initiative funds 14 companies developing technologies to support Artemis’ 2030 goal of sustained lunar operations. NASA’s Cryogenic Fluid Management Portfolio Project, involving Glenn Research Center and Marshall Space Flight Center, will use LOXSAT’s data to advance scalable depot systems for deep-space exploration. Cryogenic fuels, while volatile, offer higher energy efficiency than traditional propellants, making them ideal for long-duration missions. However, their storage and transfer in space remain unproven at scale. LOXSAT’s tests will provide critical data to refine these systems, ensuring future missions can refuel in orbit—a necessity for crewed expeditions beyond Earth’s vicinity. The mission aligns with NASA’s broader strategy to establish a lunar economy, including commercial partnerships for in-space infrastructure. By demonstrating orbital refueling, LOXSAT could pave the way for private companies to operate fuel depots, reducing mission costs and increasing flexibility for deep-space travel.