Maxar Technologies completes early fabrication work on the central cylinder structure of the Gateway space station's Power and Propulsion Element (PPE) that will make Gateway the most powerful solar electric spacecraft ever flown.

Maxar Technologies completes early fabrication work on the central cylinder structure of the Gateway space station's Power and Propulsion Element (PPE) that will make Gateway the most powerful solar electric spacecraft ever flown.

Maxar Technologies completes early fabrication work on the central cylinder structure of the Gateway space station's Power and Propulsion Element (PPE) that will make Gateway the most powerful solar electric spacecraft ever flown.

Maxar Technologies completes early fabrication work on the central cylinder structure of the Gateway space station's Power and Propulsion Element (PPE) that will make Gateway the most powerful solar electric spacecraft ever flown.

Maxar Technologies completes early fabrication work on the central cylinder structure of the Gateway space station's Power and Propulsion Element (PPE) that will make Gateway the most powerful solar electric spacecraft ever flown.

Maxar Technologies completes early fabrication work on the central cylinder structure of the Gateway space station's Power and Propulsion Element (PPE) that will make Gateway the most powerful solar electric spacecraft ever flown.

Maxar Technologies completes early fabrication work on the central cylinder structure of the Gateway space station's Power and Propulsion Element (PPE) that will make Gateway the most powerful solar electric spacecraft ever flown.

Maxar Technologies completes early fabrication work on the central cylinder structure of the Gateway space station's Power and Propulsion Element (PPE) that will make Gateway the most powerful solar electric spacecraft ever flown.

A model of the Power and Propulsion Element (PPE) is seen on display during an event where NASA is outlining how the agency is executing President Donald J. Trump’s National Space Policy and accelerating preparations for America’s return to the surface of the Moon by 2028, Tuesday, March 24, 2026, at the Mary W. Jackson NASA Headquarters building in Washington. During the event NASA leadership provided updates on mission priorities, including sending the first astronauts to the lunar surface in more than 50 years, establishing the initial elements of a permanent lunar base, getting America underway in space on nuclear propulsion, and other objectives. Photo Credit: (NASA/Bill Ingalls)

Power and Propulsion Element (PPE) model is seen on display during an event where NASA is outlining how the agency is executing President Donald J. Trump’s National Space Policy and accelerating preparations for America’s return to the surface of the Moon by 2028, Tuesday, March 24, 2026, at the Mary W. Jackson NASA Headquarters building in Washington. During the event NASA leadership provided updates on mission priorities, including sending the first astronauts to the lunar surface in more than 50 years, establishing the initial elements of a permanent lunar base, getting America underway in space on nuclear propulsion, and other objectives. Photo Credit: (NASA/Bill Ingalls)

Teams at NASA’s Glenn Research Center in Cleveland conduct acceptance testing on the third and final Advanced Electric Propulsion System (AEPS) thrusters for Gateway’s Power and Propulsion Element (PPE). After successfully completing testing, the thruster was delivered to Lanteris Space Systems in Palo Alto, California, for installation on PPE’s primary structure. Credit: NASA

Gateway’s Power and Propulsion Element (PPE) undergoes battery installations at Lanteris Space Systems in Palo Alto, California, in January 2026. PPE is a 60-kilowatt solar electric propulsion spacecraft that will supply the lunar space station with power, high-rate communications, attitude control, orbit maintenance, and orbit transfer capabilities. Its design is based on Lanteris Space Systems’ commercial 1300 bus, enhanced with the most powerful Advanced Electric Propulsion System (AEPS) thrusters and the largest roll-out solar arrays (ROSAs) ever developed. Lanteris Space Systems is the lead industry partner for PPE’s design, manufacturing, and integration.

Gateway’s Power and Propulsion Element (PPE) undergoes battery installations at Lanteris Space Systems in Palo Alto, California, in January 2026. PPE is a 60-kilowatt solar electric propulsion spacecraft that will supply the lunar space station with power, high-rate communications, attitude control, orbit maintenance, and orbit transfer capabilities. Its design is based on Lanteris Space Systems’ commercial 1300 bus, enhanced with the most powerful Advanced Electric Propulsion System (AEPS) thrusters and the largest roll-out solar arrays (ROSAs) ever developed. Lanteris Space Systems is the lead industry partner for PPE’s design, manufacturing, and integration.

Gateway’s Power and Propulsion Element (PPE) undergoes flight software uploads at Lanteris Space Systems in Palo Alto, California, in January 2026. PPE is a 60-kilowatt solar electric propulsion spacecraft that will supply the lunar space station with power, high-rate communications, attitude control, orbit maintenance, and orbit transfer capabilities. Its design is based on Lanteris Space Systems’ commercial 1300 bus, enhanced with the most powerful Advanced Electric Propulsion System (AEPS) thrusters and the largest roll-out solar arrays (ROSAs) ever developed. Lanteris Space Systems is the lead industry partner for PPE’s design, manufacturing, and integration.

The primary structure of Gateway’s Power and Propulsion Element (PPE) undergoing assembly, integration, and testing at Lanteris Space Systems in Palo Alto, California, on September 29, 2025. Credit: Lanteris Space Systems

An artist’s rendering displays a configuration of the lunar-orbiting Gateway space station’s modules and visiting spacecraft. The core elements of Gateway consist of the Habitation and Logistics Outpost (HALO) element, the Power and Propulsion Element (PPE), and Lunar I-Hab. Visiting vehicles include the Orion spacecraft, the Logistics Module, and the Human Landing System. Gateway is built in collaboration with NASA’s commercial and international partners to serve as a multiuse space port for lunar science as humanity’s first place to live and work in lunar orbit.

An artist’s rendering displays a configuration of the lunar-orbiting Gateway space station’s modules and visiting spacecraft. The core elements of Gateway consist of the Habitation and Logistics Outpost (HALO) element, the Power and Propulsion Element (PPE), and Lunar I-Hab. Visiting vehicles include the Orion spacecraft, the Logistics Module, and the Human Landing System. Gateway is built in collaboration with NASA’s commercial and international partners to serve as a multiuse space port for lunar science as humanity’s first place to live and work in lunar orbit.

NASA Glenn Research Center has received the first of three Advanced Electric Propulsion System (AEPS) thrusters for the Gateway lunar space station. Built by L3Harris Technologies, the thruster will undergo testing before integration with Gateway’s Power and Propulsion Element, launching with the HALO module ahead of Artemis IV.

The Power and Propulsion Element's 12 kw thrusters will make Gateway the most powerful solar electric spacecraft ever flown.

The Power and Propulsion Element's 12 kw thrusters will make Gateway the most powerful solar electric spacecraft ever flown.

During this Engineering Qualification Module test, the gimbal platforms for the Busek-built BHT-6000 Hall effect thrusters are exercised through their full range of motion to verify articulation performance and confirm the system can properly steer thrust once integrated with Gateway’s Power and Propulsion Element (PPE). On PPE, four BHT-6000 Hall effect thrusters and three Advanced Electric Propulsion System (AEPS) thrusters will use solar power generated by Gateway’s Roll-Out Solar Arrays (ROSAs) to ionize xenon gas. The resulting xenon ions are then accelerated to extremely high speeds and expelled from the thrusters, creating a steady and highly efficient stream of thrust. This propulsion system will enable the Gateway lunar space station to maneuver and maintain its orbit around the Moon.

During this Engineering Qualification Module test, the gimbal platforms for the Busek-built BHT-6000 Hall effect thrusters are exercised through their full range of motion to verify articulation performance and confirm the system can properly steer thrust once integrated with Gateway’s Power and Propulsion Element (PPE). On PPE, four BHT-6000 Hall effect thrusters and three Advanced Electric Propulsion System (AEPS) thrusters will use solar power generated by Gateway’s Roll-Out Solar Arrays (ROSAs) to ionize xenon gas. The resulting xenon ions are then accelerated to extremely high speeds and expelled from the thrusters, creating a steady and highly efficient stream of thrust. This propulsion system will enable the Gateway lunar space station to maneuver and maintain its orbit around the Moon.

During this Engineering Qualification Module test, the gimbal platforms for the Busek-built BHT-6000 Hall effect thrusters are exercised through their full range of motion to verify articulation performance and confirm the system can properly steer thrust once integrated with Gateway’s Power and Propulsion Element (PPE). On PPE, four BHT-6000 Hall effect thrusters and three Advanced Electric Propulsion System (AEPS) thrusters will use solar power generated by Gateway’s Roll-Out Solar Arrays (ROSAs) to ionize xenon gas. The resulting xenon ions are then accelerated to extremely high speeds and expelled from the thrusters, creating a steady and highly efficient stream of thrust. This propulsion system will enable the Gateway lunar space station to maneuver and maintain its orbit around the Moon.

Technicians at Lanteris Space Systems in Palo Alto, California, remove the first of three Advanced Electric Propulsion System (AEPS) flight thrusters from its transport container following delivery from NASA’s Glenn Research Center. The thruster previously completed acceptance testing at Glenn and will be prepared for integration with Gateway’s Power and Propulsion Element (PPE). Credit: Lanteris Space Systems

Technicians at Lanteris Space Systems in Palo Alto, California, remove the first of three Advanced Electric Propulsion System (AEPS) flight thrusters from its transport container following delivery from NASA’s Glenn Research Center. The thruster previously completed acceptance testing at Glenn and will be prepared for integration with Gateway’s Power and Propulsion Element (PPE).

The European Radiation Sensors Array is one of the first three science payloads selected to fly on the Gateway space station. ERSA will study solar and cosmic radiation to help the science community better understand this primary concern for people and hardware during deep space travels.

The European Radiation Sensors Array is one of the first three science payloads selected to fly on the Gateway space station. ERSA will study solar and cosmic radiation to help the science community better understand this primary concern for people and hardware during deep space travels.

The Intermodule Element Adaptor (IEA) is attached to the aft bulkhead of the Habitation Element (HE) to support mechanical integration of HALO and PPE. The IEA is also used to provide an enclosure to protect the HALO batteries.

NASA Glenn Research Center has received the first of three Advanced Electric Propulsion System (AEPS) thrusters for the Gateway lunar space station. Built by L3Harris Technologies, the thruster will undergo testing before integration with Gateway’s Power and Propulsion Element, launching with the HALO module ahead of Artemis IV.

Official NASA Portrait of Jon B. Olansen. Photo Date: September 12, 2018. Location: Building 8, Room 183 - Photo Studio. Photographer: Robert Markowitz

NASA and Aerojet

The Gateway space station hosts the Orion spacecraft in a polar orbit around the Moon, supporting scientific discovery on the lunar surface during the Artemis IV mission.

The Gateway space station hosts the Orion spacecraft in a polar orbit around the Moon, supporting scientific discovery on the lunar surface during the Artemis IV mission.

This infographic shows each element of Gateway, humanity's first space station in lunar orbit as a vital component of the Artemis missions to return to the Moon for scientific discovery and chart the path for the first human missions to Mars.

The Gateway lunar space station configuration and major international and commercial partners.

Astronauts will enter Gateway for the first time during the Artemis IV mission when the crewed Orion spacecraft will deliver the International Habitation (I-Hab) module to the space station.

The Gateway space station will be humanity's first space station around the Moon as a vital component of the Artemis missions to return humans to the lunar surface for scientific discovery and chart the path for the first human missions to Mars. Astronauts on Gateway will be the first humans to call deep space home during missions where they will use Gateway to conduct science and prepare for lunar surface missions.

And expanded view of the Gateway space station showing each of its elements, international partner contributions, and visiting spacecraft including Orion and the Human Landing System, with prime contractors.

The Lunar Gateway Launch, mapped. Gateway's first elements, the Power and Propulsion Element and HALO (Habitation and Logistics Outpost), will launch together to lunar orbit, where they’ll set the stage for Artemis IV: the first Gateway assembly mission. During this milestone mission, the Artemis IV crew will deliver the European Space Agency's Lunar I-Hab, dock it to HALO, and enter the space station for the very first time. NASA is currently targeting a 2027 launch for HALO and the Power and Propulsion Element. This timeline allows for the roughly year-long journey to lunar orbit and ensures everything is in place ahead of Artemis IV.