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NASA Marshall Engineers Unveil Versatile, Low-cost Hybrid Engine Testbed
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By NASA
NASA/Kevin O’Brien NASA’s SLS (Space Launch System) solid rocket boosters are the largest, most powerful solid propellant boosters to ever fly. Standing 17 stories tall and burning approximately six tons of propellant every second, each booster generates 3.6 million pounds of a thrust for a total of 7.2 million pounds: more thrust than 14 four-engine jumbo commercial airliners. Together, the SLS twin boosters provide more than 75 percent of the total thrust at launch. Each booster houses eight booster separation motors which are responsible for separating the boosters from the core stage during flight.
At the top of each booster is the frustum—a truncated cone-shaped structure that, along with the nose cone, forms the aerodynamic fairing. This frustum houses four of the separation motors, while the remaining four are located at the bottom within the aft skirt.
Image Credit: NASA/Kevin O’Brien
For more information on the Artemis Campaign, visit:
https://www.nasa.gov/feature/artemis/
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Jonathan Deal
Marshall Space Flight Center, Huntsville, Ala.
256-544-0034
jonathan.e.deal@nasa.gov
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Students from Tropico Middle School in Rosamond, California, build their own paper planes as part of a project during NASA Aero Fair on April 9, 2025.NASA/Genaro Vavuris A new generation of aerospace explorers will soon embark on a hands-on summer experience focusing on careers in science, mathematics, engineering, and technology (STEM). This month, NASA’s Armstrong Flight Research Center in Edwards, California, and the Flight Test Museum Foundation will launch the 2025 Junior Test Pilot School.
Held at Blackbird Airpark and Joe Davies Heritage Airpark in Palmdale, California, this six-week program invites elementary-aged students to step into the shoes of test pilots and engineers from 9 a.m. to 2 p.m. Mondays through Fridays, June 16 through July 25. Registration is free through participating school districts and the Flight Test Museum. Students will have direct access to legendary aircraft such as A-12, SR-71, U-2, F-86 Sabre, and NASA Boeing 747 Space Shuttle Carrier Aircraft.
The Junior Test Pilot School combines authentic NASA-designed curriculum, immersive aerospace activities, and direct engagement with engineers, test pilots, and scientists to inspire future aerospace professionals in the Antelope Valley – home to one of the nation’s highest concentrations of STEM careers.
“This program offers more than a glimpse into aerospace, it provides students a hands-on opportunity to solve real-world problems and see themselves in future STEM roles,” said Dr. Amira Flores, program integration manager for NASA’s California Office of STEM Engagement.
Daily lessons cover eight core modules: flight principles, stealth engineering, altitude effects, speed and g-force, payload impact, maneuverability, reconnaissance design, and jet engine systems.
Additionally, in collaboration with NASA Armstrong’s Aero Fair program, students will be guided through the program’s Wildfire Design Challenge by a NASA volunteer. Following the engineering design process, students will collaborate to design and build a prototype of an aerial vehicle that suppresses wildfires.
“Our junior test pilots learn to analyze the aircraft to figure out why they were designed the way they are and think like an engineer,” said Lisa Sheldon Brown, director of education at the Flight Test Museum. “Research shows that academic trajectory is set by fifth grade, making this the critical window to inspire STEM interest and career awareness.”
The program is delivered in partnership with the City of Palmdale and is supported by industry sponsors, including Lockheed Martin and Northrop Grumman. These partners not only provide funding and volunteers but also elevate career exposure by introducing students to diverse aerospace professionals within the region.
NASA Armstrong is a hub of aeronautical innovation and STEM workforce development in the Antelope Valley. Through programs like Aero Fair and partnerships like Junior Test Pilots School, Armstrong inspires and equips the next generation of engineers, pilots, and scientists.
The Flight Test Museum Foundation preserves the legacy and promotes the future of aerospace through education programs and historical preservation at the Blackbird Airpark and forthcoming Flight Test Museum at Edwards Air Force Base in Edwards, California.
For more about NASA’s Armstrong Flight Research Center, visit:
https://www.nasa.gov/armstrong
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Elena Aguirre
Armstrong Flight Research Center, Edwards, California
(661) 276-7004
elena.aguirre@nasa.gov
Dede Dinius
Armstrong Flight Research Center, Edwards, California
(661) 276-5701
darin.l.dinius@nasa.gov
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NASA Launching Rockets Into Radio-Disrupting Clouds
NASA is launching rockets from a remote Pacific island to study mysterious, high-altitude cloud-like structures that can disrupt critical communication systems. The mission, called Sporadic-E ElectroDynamics, or SEED, opens its three-week launch window from Kwajalein Atoll in the Marshall Islands on Friday, June 13.
The atmospheric features SEED is studying are known as Sporadic-E layers, and they create a host of problems for radio communications. When they are present, air traffic controllers and marine radio users may pick up signals from unusually distant regions, mistaking them for nearby sources. Military operators using radar to see beyond the horizon may detect false targets — nicknamed “ghosts” — or receive garbled signals that are tricky to decipher. Sporadic-E layers are constantly forming, moving, and dissipating, so these disruptions can be difficult to anticipate.
An animated illustration depicts Sporadic-E layers forming in the lower portions of the ionosphere, causing radio signals to reflect back to Earth before reaching higher layers of the ionosphere. NASA’s Goddard Space Flight Center/Conceptual Image Lab Sporadic-E layers form in the ionosphere, a layer of Earth’s atmosphere that stretches from about 40 to 600 miles (60 to 1,000 kilometers) above sea level. Home to the International Space Station and most Earth-orbiting satellites, the ionosphere is also where we see the greatest impacts of space weather. Primarily driven by the Sun, space weather causes myriad problems for our communications with satellites and between ground systems. A better understanding of the ionosphere is key to keeping critical infrastructure running smoothly.
The ionosphere is named for the charged particles, or ions, that reside there. Some of these ions come from meteors, which burn up in the atmosphere and leave traces of ionized iron, magnesium, calcium, sodium, and potassium suspended in the sky. These “heavy metals” are more massive than the ionosphere’s typical residents and tend to sink to lower altitudes, below 90 miles (140 kilometers). Occasionally, they clump together to create dense clusters known as Sporadic-E layers.
The Perseids meteor shower peaks in mid-August. Meteors like these can deposit metals into Earth’s ionosphere that can help create cloud-like structures called Sporadic-E layers. NASA/Preston Dyches “These Sporadic-E layers are not visible to naked eye, and can only be seen by radars. In the radar plots, some layers appear like patchy and puffy clouds, while others spread out, similar to an overcast sky, which we call blanketing Sporadic-E layer” said Aroh Barjatya, the SEED mission’s principal investigator and a professor of engineering physics at Embry-Riddle Aeronautical University in Daytona Beach, Florida. The SEED team includes scientists from Embry-Riddle, Boston College in Massachusetts, and Clemson University in South Carolina.
“There’s a lot of interest in predicting these layers and understanding their dynamics because of how they interfere with communications,” Barjatya said.
A Mystery at the Equator
Scientists can explain Sporadic-E layers when they form at midlatitudes but not when they appear close to Earth’s equator — such as near Kwajalein Atoll, where the SEED mission will launch.
In the Northern and Southern Hemispheres, Sporadic-E layers can be thought of as particle traffic jams.
Think of ions in the atmosphere as miniature cars traveling single file in lanes defined by Earth’s magnetic field lines. These lanes connect Earth end to end — emerging near the South Pole, bowing around the equator, and plunging back into the North Pole.
A conceptual animation shows Earth’s magnetic field. The blue lines radiating from Earth represent the magnetic field lines that charged particles travel along. NASA’s Goddard Space Flight Center/Conceptual Image Lab At Earth’s midlatitudes, the field lines angle toward the ground, descending through atmospheric layers with varying wind speeds and directions. As the ions pass through these layers, they experience wind shear — turbulent gusts that cause their orderly line to clump together. These particle pileups form Sporadic-E layers.
But near the magnetic equator, this explanation doesn’t work. There, Earth’s magnetic field lines run parallel to the surface and do not intersect atmospheric layers with differing winds, so Sporadic-E layers shouldn’t form. Yet, they do — though less frequently.
“We’re launching from the closest place NASA can to the magnetic equator,” Barjatya said, “to study the physics that existing theory doesn’t fully explain.”
Taking to the Skies
To investigate, Barjatya developed SEED to study low-latitude Sporadic-E layers from the inside. The mission relies on sounding rockets — uncrewed suborbital spacecraft carrying scientific instruments. Their flights last only a few minutes but can be launched precisely at fleeting targets.
Beginning the night of June 13, Barjatya and his team will monitor ALTAIR (ARPA Long-Range Tracking and Instrumentation Radar), a high-powered, ground-based radar system at the launch site, for signs of developing Sporadic-E layers. When conditions are right, Barjatya will give the launch command. A few minutes later, the rocket will be in flight.
The SEED science team and mission management team in front of the ARPA Long-Range Tracking and Instrumentation Radar (ALTAIR). The SEED team will use ALTAIR to monitor the ionosphere for signs of Sporadic-E layers and time the launch. U.S. Army Space and Missile Defense Command On ascent, the rocket will release colorful vapor tracers. Ground-based cameras will track the tracers to measure wind patterns in three dimensions. Once inside the Sporadic-E layer, the rocket will deploy four subpayloads — miniature detectors that will measure particle density and magnetic field strength at multiple points. The data will be transmitted back to the ground as the rocket descends.
On another night during the launch window, the team will launch a second, nearly identical rocket to collect additional data under potentially different conditions.
Barjatya and his team will use the data to improve computer models of the ionosphere, aiming to explain how Sporadic-E layers form so close to the equator.
“Sporadic-E layers are part of a much larger, more complicated physical system that is home to space-based assets we rely on every day,” Barjatya said. “This launch gets us closer to understanding another key piece of Earth’s interface to space.”
By Miles Hatfield
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Jun 12, 2025 Related Terms
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Preparations for Next Moonwalk Simulations Underway (and Underwater)
Electrical engineer Nikolas Gibson performs calibration tests on the MODIS/ASTER Airborne Simulator (MASTER) spectrometer, co-developed by NASA’s Ames Research Center and NASA’s Jet Propulsion Laboratory. Gibson works at the Airborne Sensor Facility at Ames, which builds, maintains, miniaturizes, and calibrates instruments.NASA/Milan Loiacono
NASA’s Ames Research Center in Silicon Valley houses a unique laboratory: the Airborne Sensor Facility (ASF). The engineers at the ASF are responsible for building, maintaining, and operating numerous instruments that get deployed on research aircraft, but one of their most important roles is instrument calibration.
Think of calibration like tuning a piano between performances: A musician uses a tuner to set the standard pitch for each string, ensuring that the piano remains on pitch for every concert.
The “tuners” at ASF include lasers, mirrors, and a light source called an integrating sphere – a hollow sphere about 36 inches in diameter that emits a set amount of light from a hole in the top. By checking an instrument against this baseline between each mission, engineers ensure that the instrument sensors provide accurate, reliable data every time.
In the photo above, electrical engineer Nikolas Gibson performs calibration tests on the MODIS/ASTER Airborne Simulator (MASTER) spectrometer, co-developed by NASA Ames and NASA’s Jet Propulsion Laboratory in Southern California.
A spectrometer separates light into individual wavelengths, providing researchers with information about the properties of whatever is creating or interacting with that light. The MASTER instrument measures about 50 individual spectral channels, providing data on wavelengths from the visible spectrum through the infrared.
When it comes to calibration, each of these channels functions like a specific key on a piano and needs to be individually checked against the “tuner.” By pointing the instrument’s sensor at a known quantity of light coming from the integrating sphere, the team checks the accuracy of MASTER’s data output and repairs or adjusts the sensor as needed.
In this image, MASTER had returned from an April 2025 scientific campaign observing prescribed fires in Alabama and Georgia with NASA’s FireSense project. It was recalibrated before heading back into the field for the Geological Earth Mapping Experiment, or GEMx, mission in late May 2025, which will use the instrument to help map critical minerals across the southwestern United States.
About the Author
Milan Loiacono
Science Communication SpecialistMilan Loiacono is a science communication specialist for the Earth Science Division at NASA Ames Research Center.
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Last Updated Jun 11, 2025 Related Terms
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4 Min Read NASA Student Challenge Prepares Future Designers for Lunar Missions
At NASA’s Johnson Space Center in Houston, the next generation of lunar explorers and engineers are already hard at work. Some started with sketchbooks and others worked with computer-aided design files, but all had a vision of how design could thrive in extreme environments.
Thanks to NASA’s Student Design Challenge, Spacesuit User Interface Technologies for Students (SUITS), those visions are finding their way into real mission technologies.
NASA’s Spacesuit User Interface Technologies for Students (SUITS) teams test their augmented reality devices at the Mars Rock Yard during the 2025 test week at Johnson Space Center in Houston.
Credit: NASA/James Blair The SUITS challenge invites university and graduate students from across the U.S. to design, build, and test interactive displays integrated into spacesuit helmets, continuing an eight-year tradition of hands-on field evaluations that simulate conditions astronauts may face on the lunar surface. The technology aims to support astronauts with real-time navigation, task management, and scientific data visualization during moonwalks. While the challenge provides a unique opportunity to contribute to future lunar missions, for many participants, SUITS offers something more: a launchpad to aerospace careers.
The challenge fosters collaboration between students in design, engineering, and computer science—mirroring the teamwork needed for real mission development.
NASA SUITS teams test their augmented reality devices at Johnson’s Mars Rock Yard on May 21, 2025.
Credit: NASA/Robert Markowitz SUITS taught me how design can be pushed to solve for the many niche challenges that come with an environment as unique and unforgiving as space.
Keya Shah
Softgoods Engineering Technologist
Keya Shah, now a softgoods engineering technologist in Johnson’s Softgoods Laboratory, discovered her path through SUITS while studying industrial design at the Rhode Island School of Design (RISD).
“SUITS taught me how design can be pushed to solve for the many niche challenges that come with an environment as unique and unforgiving as space,” Shah said. “Whether applied to digital or physical products, it gave me a deep understanding of how intuitive and thoughtfully designed solutions are vital for space exploration.”
As chief designer for her team’s 2024 Mars spacewalk project, Shah led more than 30 designers and developers through rounds of user flow mapping, iterative prototyping, and interface testing.
“Design holds its value in making you think beyond just the ‘what’ to solve a problem and figure out ‘how’ to make the solution most efficient and user-oriented,” she said, “SUITS emphasized that, and I continually strive to highlight these strengths with the softgoods I design.”
Shah now works on fabric-based flight hardware at Johnson, including thermal and acoustic insulation blankets, tool stowage packs, and spacesuit components.
“There’s a very exciting future in human space exploration at the intersection of softgoods with hardgoods and the digital world, through innovations like smart textiles, wearable technology, and soft robotics,” Shah said. “I look forward to being part of it.”
Softgoods Engineering Technologist Keya Shah evaluates the SUITS interface design during the 2025 test week.
Credit: NASA/James Blair For RISD alumnus Felix Arwen, now a softgoods engineer at Johnson, the challenge offered invaluable hands-on experience. “It gave me the opportunity to take projects from concept to a finished, tested product—something most classrooms didn’t push me to do,” Arwen said.
Serving as a technical adviser and liaison between SUITS designers and engineers, Arwen helped bridge gaps between disciplines—a skill critical to NASA’s team-based approach.
“It seems obvious now, but I didn’t always realize how much design contributes to space exploration,” Arwen said. “The creative, iterative process is invaluable. Our work isn’t just about aesthetics—it’s about usability, safety, and mission success.”
Arwen played a key role in expanding RISD’s presence across multiple NASA Student Design Challenges, including the Human Exploration Rover Challenge, the Micro-g Neutral Buoyancy Experiment Design Teams, and the Breakthrough, Innovative, and Game-changing Idea Challenge. The teams, often partnering with Brown University, demonstrated how a design-focused education can uniquely contribute to solving complex engineering problems.
“NASA’s Student Design Challenges gave me the structure to focus my efforts on learning new skills and pursuing projects I didn’t even know I’d be interested in,” he said.
It seems obvious now, but I didn’t always realize how much design contributes to space exploration. The creative, iterative process is invaluable. Our work isn’t just about aesthetics—it’s about usability, safety, and mission success.
Felix Arwen
Softgoods Engineer
Softgoods Engineer Felix Arwen tests hardware while wearing pressurized gloves inside a vacuum glovebox. Both Arwen and Shah remain involved with SUITS as mentors and judges, eager to support the next generation of space designers.
Their advice to current participants? Build a portfolio that reflects your passion, seek opportunities outside the classroom, and do not be afraid to apply for roles that might not seem to fit a designer.
“While the number of openings for a designer at NASA might be low, there will always be a need for good design work, and if you have the portfolio to back it up, you can apply to engineering roles that just might not know they need you yet,” Arwen said.
SUIT teams test their augmented reality devices during nighttime activities on May 21, 2025.
Credit: NASA/Robert MarkowitzNASA/Robert Markowitz As NASA prepares for lunar missions, the SUITS challenge continues to bridge the gap between student imagination and real-world innovation, inspiring a new wave of space-ready problem-solvers.
“Design pushes you to consistently ask ‘what if?’ and reimagine what’s possible,” Shah said. “That kind of perspective will always stay core to NASA.”
Are you interested in joining the next NASA SUITS challenge? Find more information here.
The next challenge will open for proposals at the end of August 2025.
About the Author
Sumer Loggins
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