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By NASA
The Propulsion Bus Module of Gateway’s Power and Propulsion Element undergoes assembly and installations at Maxar Space Systems in Palo Alto, California.Maxar Space Systems NASA’s Artemis IV astronauts will be the first to inhabit the Gateway lunar space station, opening the door to greater exploration of the Moon and paving the way to Mars. Gateway’s Power and Propulsion Element, which will make the station the most powerful solar electric spacecraft ever flown, takes shape at Maxar Space Systems. In lunar orbit, Gateway will allow NASA to conduct unique science and exploration while preparing astronauts to go to the Red Planet.
Technicians install key hardware on the element’s Propulsion Bus Module following installation of both electric propulsion and chemical propulsion control modules. The image highlights a propellant tank exposed on the right, positioned within the central cylinder of the element.
The Power and Propulsion Element will launch with Gateway’s HALO (Habitation and Logistics Outpost) ahead of NASA’s Artemis IV mission. During Artemis IV, V, and VI, international crews of astronauts will assemble the lunar space station around the Moon and embark on expeditions to the Moon’s South Pole region.
The Power and Propulsion Element is managed out of NASA’s Glenn Research Center in Cleveland and built by Maxar Space Systems in Palo Alto, California.
Gateway is an international collaboration to establish humanity’s first lunar space station as a central component of the Artemis architecture designed to return humans to the Moon for scientific discovery and chart a path for the first human missions to Mars.
The Propulsion Bus Module of Gateway’s Power and Propulsion Element undergoes assembly and installations at Maxar Space Systems in Palo Alto, California.Maxar Space Systems An artist’s rendering of the Gateway lunar space station, including its Power and Propulsion Element, shown here with its solar arrays deployed. Gateway will launch its initial elements to lunar orbit ahead of the Artemis IV mission. NASA/Alberto Bertolin An artist’s rendering of Gateway with the Power and Propulsion Element’s advanced thrusters propelling the lunar space station to the Moon. NASA/Alberto Bertolin Learn More About Gateway Facebook logo @NASAGateway @NASA_Gateway Instagram logo @nasaartemis Share
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Last Updated Feb 25, 2025 ContactJacqueline Minerdjacqueline.minerd@nasa.govLocationGlenn Research Center Related Terms
Artemis Artemis 4 Earth's Moon Exploration Systems Development Mission Directorate Gateway Program Gateway Space Station Glenn Research Center Humans in Space Technology Technology for Space Travel Explore More
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By NASA
Gateway’s HALO (Habitation and Logistics Outpost) in a cleanroom at Thales Alenia Space in Turin, Italy. After final installations are complete, it will be packaged and transported to the United States for final outfitting before being integrated with Gateway’s Power and Propulsion Element and launched to lunar orbit. Thales Alenia Space Through the Artemis campaign, NASA will send astronauts on missions to and around the Moon. The agency and its international partners report progress continues on Gateway, the first space station that will permanently orbit the Moon, after visiting the Thales Alenia Space facility in Turin, Italy, where initial fabrication for one of two Gateway habitation modules is nearing completion.
Leaders from NASA, ESA (European Space Agency), and the Italian Space Agency, as well as industry representatives from Northrop Grumman and Thales Alenia Space, were in Turin to assess Gateway’s HALO (Habitation and Logistics Outpost) module before its primary structure is shipped from Italy to Northrop Grumman’s Gilbert, Arizona site in March. Following final outfitting and verification testing, the module will be integrated with the Power and Propulsion Element at NASA’s Kennedy Space Center in Florida.
“Building and testing hardware for Gateway is truly an international collaboration,” said Jon Olansen, manager, Gateway Program, at NASA’s Johnson Space Center in Houston. “We’re excited to celebrate this major flight hardware milestone, and this is just the beginning – there’s impressive and important progress taking shape with our partners around the globe, united by our shared desire to expand human exploration of our solar system while advancing scientific discovery.”
Gateway’s HALO (Habitation and Logistics Outpost) in a cleanroom at Thales Alenia Space in Turin, Italy. After final installations are complete, it will be packaged and transported to the United States for final outfitting before being integrated with Gateway’s Power and Propulsion Element and launched to lunar orbit.Thales Alenia Space To ensure all flight hardware is ready to support Artemis IV — the first crewed mission to Gateway – NASA is targeting the launch of HALO and the Power and Propulsion Element no later than December 2027. These integrated modules will launch aboard a SpaceX Falcon Heavy rocket and spend about a year traveling uncrewed to lunar orbit, while providing scientific data on solar and deep space radiation during transit.
Launching atop HALO will be ESA’s Lunar Link communication system, which will provide high-speed communication between the Moon and Gateway. The system is undergoing testing at another Thales Alenia Space facility in Cannes, France.
Once in lunar orbit, Gateway will continue scientific observations while awaiting the arrival of Artemis IV astronauts aboard an Orion spacecraft which will deliver and dock Gateway’s second pressurized habitable module, the ESA-led Lunar I-Hab. Thales Alenia Space, ESA’s primary contractor for the Lunar I-Hab and Lunar View refueling module, has begun production of the Lunar I-Hab, and design of Lunar View in Turin.
Teams from NASA and ESA (European Space Agency), including NASA astronaut Stan Love (far right) and ESA astronaut Luca Parmitano (far left) help conduct human factors testing inside a mockup of Gateway’s Lunar I-Hab module.Thales Alenia Space Northrop Grumman and its subcontractor, Thales Alenia Space, completed welding of HALO in 2024, and the module successfully progressed through pressure and stress tests to ensure its suitability for the harsh environment of deep space.
Maxar Space Systems is assembling the Power and Propulsion Element, which will make Gateway the most powerful solar electric propulsion spacecraft ever flown. Major progress in 2024 included installation of Xenon and chemical propulsion fuel tanks, and qualification of the largest roll-out solar arrays ever built. NASA and its partners will complete propulsion element assembly, and acceptance and verification testing of next-generation electric propulsion thrusters this year.
The main bus of Gateway’s Power and Propulsion Element undergoes assembly and installations at Maxar Space Systems in Palo Alto, California.Maxar Space Systems SpaceX will provide both the Starship human landing system that will land astronauts on the lunar surface during NASA’s Artemis III mission and ferry astronauts from Gateway to the lunar South Pole region during Artemis IV, as well as provide logistics spacecraft to support crewed missions.
NASA also has selected Blue Origin to develop Blue Moon, the human landing system for Artemis V, as well as logistics spacecraft for future Artemis missions. Having two distinct lunar landing designs provides flexibility and supports a regular cadence of Moon landings in preparation for future missions to Mars.
CSA (Canadian Space Agency) is developing Canadarm3, an advanced robotics system, and JAXA (Japan Aerospace Exploration Agency) is designing and testing Lunar I-Hab’s vital life support systems, batteries, and a resupply and logistics vehicle called HTV-XG.
NASA’s newest Gateway partner, the Mohammad Bin Rashid Space Centre (MBRSC) of the United Arab Emirates, kicked off early design for the Gateway Crew and Science Airlock that will be delivered on Artemis VI. The selection of Thales Alenia Space as its airlock prime contractor was announced by MBRSC on Feb. 4.
Development continues to advance on three radiation-focused initial science investigations aboard Gateway. These payloads will help scientists better understand unpredictable space weather from the Sun and galactic cosmic rays that will affect astronauts and equipment during Artemis missions to the Moon and beyond.
The Gateway lunar space station is a multi-purpose platform that offers capabilities for long-term exploration in deep space in support of NASA’s Artemis campaign and Moon to Mars objectives. Gateway will feature docking ports for a variety of visiting spacecraft, as well as space for crew to live, work, and prepare for lunar surface missions. As a testbed for future journeys to Mars, continuous investigations aboard Gateway will occur with and without crew to better understand the long-term effects of deep space radiation on vehicle systems and the human body as well as test and operate next generation spacecraft systems that will be necessary to send humans to Mars.
Learn More About Gateway Facebook logo @NASAGateway @NASA_Gateway Instagram logo @nasaartemis Share
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Last Updated Feb 21, 2025 ContactLaura RochonLocationJohnson Space Center Related Terms
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
How to Attend
The workshop will be hosted by NASA Jet Propulsion Laboratory.
Virtual and in-person attendance are available. Registration is required for both. (Link coming soon!)
Virtual attendees will receive connection information one week before the workshop.
Background, Goals and Objectives
The NASA Engineering and Safety Center (NESC) is conducting an assessment of the state of cold capable electronics for future lunar surface missions. The intent is to enable the continuous use of electronics with minimal or no thermal management on missions of up to 20 years in all regions of the lunar surface, e.g., permanently shadowed regions and equatorial. The scope of the assessment includes: capture of the state of cold electronics at NASA, academia, and industry; applications and challenges for lunar environments; gap analyses of desired capabilities vs state of the art/practice; guidance for cold electronics selection, evaluation and qualification; and recommendations for technology advances and follow-on actions to close the gaps. The preliminary report of the assessment will be available the first week of April 2025 on this website, i.e., 3 weeks prior to the workshop. Attendees are urged to read the report beforehand as the workshop will provide only a limited, high-level summary of the report’s key findings. The goal of the workshop is to capture your feedback with regards to the findings of the report, especially in the areas below: Technologies, new or important studies or data that we missed. Gaps, i.e. requirements vs available capabilities that we missed. Additional recommendations, suggestions, requests, that we missed.
Preliminary Agenda
Day 1, April 30, 2025 8:00 – 9:00 Sign-in 9:00 – 10:00 Introduction – Y. Chen 10:00 – 11:00 Environment and Architectural Considerations – R. Some 11:00 – 12:00 Custom Electronics – M. Mojarradi 12:00 – 13:00 Lunch 13:00 – 14:00 COTS Components – J. Yang-Scharlotta 14:00 – 15:00 Power Architecture – R. Oeftering 15:00 – 15:30 Energy Storage – E. Brandon 15:30 – 17:00 Materials and Packaging and Passives – L. Del Castillo 17:00 – 17:30 Qualification – Y. Chen 18:30 Dinner Day 2, May 1, 2025 8:00 – 9:00 Sign-in 9:00 – 12:00 Review and discussion of key findings 12:00 – 13:00 Lunch 13:00 – 15:00 Follow on work concepts & discussions. Please be prepared to discuss: 15 min each from industry primes and subsystem developers What would you like to see developed and how would it impact your future missions/platforms? 15:00 – 17:30 Follow on work concepts & discussions 15 min each from technology & component developers, academia, government agencies, etc. What would you like to be funded to do and what are benefits to NASA/missions? 17:00 – 17:30 Wrap up – Y. Chen Points of Contact
If you have any questions regarding the workshop, please contact Roxanne Cena at Roxanne.R.Cena@jpl.nasa.gov and Amy K. Wilson at Amy.K.Wilson@jpl.nasa.gov
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Last Updated Feb 20, 2025 Related Terms
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By NASA
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA’s Lunar Trailblazer approaches the Moon as it enters its science orbit in this artist’s concept. The small satellite will orbit about 60 miles (100 kilometers) above the lunar surface, producing the best-yet maps of water on the Moon.Lockheed Martin Space NASA’s Lunar Trailblazer spacecraft gets covered in anti-static wrap before being shipped from Lockheed Martin Space in Littleton, Colorado, to the agency’s Kennedy Space Center in Florida, where it arrived on Jan. 29.Lockheed Martin Space Before arriving at the Moon, the small satellite mission will use the gravity of the Sun, Earth, and Moon over several months to gradually line up for capture into lunar orbit.
NASA’s Lunar Trailblazer arrived in Florida recently in advance of its launch later this month and has been integrated with a SpaceX Falcon 9 rocket. Shipped from Lockheed Martin Space in Littleton, Colorado, the small satellite is riding along on Intuitive Machines’ IM-2 launch — part of NASA’s CLPS (Commercial Lunar Payload Services) initiative — which is slated for no earlier than Thursday, Feb. 26, from Launch Complex 39A at the agency’s Kennedy Space Center.
Approximately 48 minutes after launch, Lunar Trailblazer will separate from the rocket and begin its independent flight to the Moon. The small satellite will discover where the Moon’s water is, what form it is in, and how it changes over time, producing the best-yet maps of water on the lunar surface. Observations gathered during its two-year prime mission will contribute to the understanding of water cycles on airless bodies throughout the solar system while also supporting future human and robotic missions to the Moon by identifying where water is located.
Key to achieving these goals are the spacecraft’s two state-of-the-art science instruments: the High-resolution Volatiles and Minerals Moon Mapper (HVM3) infrared spectrometer and the Lunar Thermal Mapper (LTM) infrared multispectral imager. The HVM3 instrument was provided by NASA’s Jet Propulsion Laboratory in Southern California and LTM was built by the University of Oxford and funded by the UK Space Agency.
Lunar Trailblazer’s voyage to the Moon will take between four and seven months, de-pending on the day it launches. This orbital diagram shows the low-energy transfer trajectory of the NASA mission should it launch on Feb. 26, the earliest date in its launch period.NASA/JPL-Caltech “The small team is international in scope, which is more typical of larger projects,” said Andy Klesh, Lunar Trailblazer’s project systems engineer at JPL. “And unlike the norm for small missions that may only have a very focused, singular purpose, Lunar Trailblazer has two high-fidelity instruments onboard. We are really punching above our weight.”
Intricate Navigation
Before it can use these instruments to collect science data, Lunar Trailblazer will for several months perform a series of Moon flybys, thruster bursts, and looping orbits. These highly choreographed maneuvers will eventually position the spacecraft so it can map the surface in great detail.
Weighing only 440 pounds (200 kilograms) and measuring 11.5 feet (3.5 meters) wide when its solar panels are fully deployed, Lunar Trailblazer is about the size of a dishwasher and has a relatively small engine. To make its four-to-seven-month trip to the Moon (depending on the launch date) as efficient as possible, the mission’s design and navigation team has planned a trajectory that will use the gravity of the Sun, Earth, and Moon to guide the spacecraft — a technique called low-energy transfer.
“The initial boost provided by the rocket will send the spacecraft past the Moon and into deep space, and its trajectory will then be naturally reshaped by gravity after several lunar flybys and loops around Earth. This will allow it to be captured into lunar orbit with minimal propulsion needs,” said Gregory Lantoine, Lunar Trailblazer’s mission design and navigation lead at JPL. “It’s the most fuel-efficient way to get to where we need to go.”
As it flies past the Moon several times, the spacecraft will use small thruster bursts — aka trajectory correction maneuvers — to slowly change its orbit from highly elliptical to circular, bringing the satellite down to an altitude of about 60 miles (100 kilometers) above the Moon’s surface.
Arriving at the Moon
Once in its science orbit, Lunar Trailblazer will glide over the Moon’s surface, making 12 orbits a day and observing the surface at a variety of different times of day over the course of the mission. The satellite will also be perfectly placed to peer into the permanently shadowed craters at the Moon’s South Pole, which harbor cold traps that never see direct sunlight. If Lunar Trailblazer finds significant quantities of ice at the base of the craters, those locations could be pinpointed as a resource for future lunar explorers.
The data the mission collects will be transmitted to NASA’s Deep Space Network and delivered to Lunar Trailblazer’s new operations center at Caltech’s IPAC in Pasadena, California. Working alongside the mission’s experienced team will be students from Caltech and nearby Pasadena City College who are involved in all aspects of the mission, from operations and communications to developing software.
Lunar Trailblazer was a selection of NASA’s SIMPLEx (Small Innovative Missions for Planetary Exploration), which provides opportunities for low-cost science spacecraft to ride-share with selected primary missions. To maintain the lower overall cost, SIMPLEx missions have a higher risk posture and lighter requirements for oversight and management. This higher risk acceptance allows NASA to test pioneering technologies, and the definition of success for these missions includes the lessons learned from more experimental endeavors.
“We are a small mission with groundbreaking science goals, so we will succeed by embracing the flexibility that’s built into our organization,” said Lee Bennett, Lunar Trailblazer operations lead with IPAC. “Our international team consists of seasoned engineers, science team members from several institutions, and local students who are being given the opportunity to work on a NASA mission for the first time.”
More About Lunar Trailblazer
Lunar Trailblazer is led by Principal Investigator Bethany Ehlmann of Caltech in Pasadena, California. Caltech also leads the mission’s science investigation and mission operations. This includes planning, scheduling, and sequencing of all science, instrument, and spacecraft activities during the nominal mission. Science data processing will be done in the Bruce Murray Laboratory for Planetary Visualization at Caltech. NASA’s Jet Propulsion Laboratory in Southern California manages Lunar Trailblazer and provides system engineering, mission assurance, the HVM3 instrument, and mission design and navigation. Lockheed Martin Space provides the spacecraft, integrates the flight system, and supports operations under contract with Caltech. University of Oxford developed and provided the LTM instrument. Part of NASA’s Lunar Discovery Exploration Program, the mission is managed by NASA’s Planetary Mission Program Office at Marshall Space Flight Center in Huntsville, Alabama, for the agency’s Science Mission Directorate in Washington.
For more information about Lunar Trailblazer, visit:
https://www.jpl.nasa.gov/missions/lunar-trailblazer
How NASA’s Lunar Trailblazer Could Decipher the Moon’s Icy Secrets NASA’s Lunar Trailblazer Gets Final Payload for Moon Water Hunt Moon Water Imager Integrated With NASA’s Lunar Trailblazer News Media Contacts
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
Ian J. O’Neill
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-2649
ian.j.oneill@jpl.nasa.gov
Isabel Swafford
Caltech IPAC
626-216-4257
iswafford@ipac.caltech.edu
2025-021
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Last Updated Feb 13, 2025 Related Terms
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