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By NASA
A NASA-sponsored team is creating a new approach to measure magnetic fields by developing a new system that can both take scientific measurements and provide spacecraft attitude control functions. This new system is small, lightweight, and can be accommodated onboard the spacecraft, eliminating the need for the boom structure that is typically required to measure Earth’s magnetic field, thus allowing smaller, lower-cost spacecraft to take these measurements. In fact, this new system could not only enable small spacecraft to measure the magnetic field, it could replace the standard attitude control systems in future spacecraft that orbit Earth, allowing them to provide the important global measurements that enable us to understand how Earth’s magnetic field protects us from dangerous solar particles.
Photo of the aurora (taken in Alaska) showing small scale features that are often present. Credit: NASA/Sebastian Saarloos
Solar storms drive space weather that threatens our many assets in space and can also disrupt Earth’s upper atmosphere impacting our communications and power grids. Thankfully, the Earth’s magnetic field protects us and funnels much of that energy into the north and south poles creating aurorae. The aurorae are a beautiful display of the electromagnetic energy and currents that flow throughout the Earth’s space environment. They often have small-scale magnetic features that affect the total energy flowing through the system. Observing these small features requires multiple simultaneous observations over a broad range of spatial and temporal scales, which can be accomplished by constellations of small spacecraft.
To enable such constellations, NASA is developing an innovative hybrid magnetometer that makes both direct current (DC) and alternating current (AC) magnetic measurements and is embedded in the spacecraft’s attitude determination and control system (ADCS)—the system that enables the satellite to know and control where it is pointing. High-performance, low SWAP+C (low-size, weight and power + cost) instruments are required, as is the ability to manufacture and test large numbers of these instruments within a typical flight build schedule. Future commercial or scientific satellites could use these small, lightweight embedded hybrid magnetometers to take the types of measurements that will expand our understanding of space weather and how Earth’s magnetic field responds to solar storms
It is typically not possible to take research-quality DC and AC magnetic measurements using sensors within an ADCS since the ADCS is inside the spacecraft and near contaminating sources of magnetic noise such as magnetic torque rods—the electromagnets that generate a magnetic field and push against the Earth’s magnetic field to control the orientation of a spacecraft. Previous missions that have flown both DC and AC magnetometers placed them on long booms pointing in opposite directions from the satellite to keep the sensors as far from the spacecraft and each other as possible. In addition, the typical magnetometer used by an ADCS to measure the orientation of the spacecraft with respect to the geomagnetic field does not sample fast enough to measure the high-frequency signals needed to make magnetic field observations.
A NASA-sponsored team at the University of Michigan is developing a new hybrid magnetometer and attitude determination and control system (HyMag-ADCS) that is a low-SWAP single package that can be integrated into a spacecraft without booms. HyMag-ADCS consists of a three-axis search coil AC magnetometer and a three-axis Quad-Mag DC magnetometer. The Quad-Mag DC magnetometer uses machine learning to enable boomless DC magnetometery, and the hybrid search-coil AC magnetometer includes attitude determination torque rods to enable the single 1U volume (103 cm) system to perform ADCS functions as well as collect science measurements.
The magnetic torque rod and search coil sensor (left) and the Quad-Mag magnetometer prototype (right). Credit: Mark Moldwin The HyMag-ADCS team is incorporating the following technologies into the system to ensure success.
Quad-Mag Hardware: The Quad-Mag DC magnetometer consists of four magneto-inductive magnetometers and a space-qualified micro-controller mounted on a single CubeSat form factor (10 x 10 cm) printed circuit board. These two types of devices are commercially available. Combining multiple sensors on a single board increases the instrument’s sensitivity by a factor of two compared to using a single sensor. In addition, the distributed sensors enable noise identification on small satellites, providing the science-grade magnetometer sensing that is key for both magnetic field measurements and attitude determination. The same type of magnetometer is part of the NASA Artemis Lunar Gateway Heliophysics Environmental and Radiation Measurement Experiment Suite (HERMES) Noisy Environment Magnetometer in a Small Integrated System (NEMISIS) magnetometer scheduled for launch in early 2027.
Dual-use Electromagnetic Rods: The HyMag-ADCS team is using search coil electronics and torque rod electronics that were developed for other efforts in a new way. Use of these two electronics systems enables the electromagnetic rods in the HyMag-ADCS system to be used in two different ways—as torque rods for attitude determination and as search coils to make scientific measurements. The search coil electronics were designed for ground-based measurements to observe ultra-low frequency signals up to a few kHz that are generated by magnetic beacons for indoor localization. The torque rod electronics were designed for use on CubeSats and have flown on several University of Michigan CubeSats (e.g., CubeSat-investigating Atmospheric Density Response to Extreme driving [CADRE]). The HyMag-ADCS concept is to use the torque rod electronics as needed for attitude control and use the search coil electronics the rest of the time to make scientific AC magnetic field measurements.
Machine Learning Algorithms for Spacecraft Noise Identification: Applying machine learning to these distributed sensors will autonomously remove noise generated by the spacecraft. The team is developing a powerful Unsupervised Blind Source Separation (UBSS) algorithm and a new method called Wavelet Adaptive Interference Cancellation for Underdetermined Platforms (WAIC-UP) to perform this task, and this method has already been demonstrated in simulation and the lab.
The HyMag-ADCS system is early in its development stage, and a complete engineering design unit is under development. The project is being completed primarily with undergraduate and graduate students, providing hands-on experiential training for upcoming scientists and engineers.
Early career electrical engineer Julio Vata and PhD student Jhanene Heying-Melendrez with art student resident Ana Trujillo Garcia in the magnetometer lab testing prototypes. Credit: Mark Moldwin For additional details, see the entry for this project on NASA TechPort .
Project Lead: Prof. Mark Moldwin, University of Michigan
Sponsoring Organization: NASA Heliophysics Division’s Heliophysics Technology and Instrument Development for Science (H-TIDeS) program.
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Last Updated Jun 17, 2025 Related Terms
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By European Space Agency
Today, the European Space Agency’s Proba-3 mission unveils its first images of the Sun’s outer atmosphere – the solar corona. The mission’s two satellites, able to fly as a single spacecraft thanks to a suite of onboard positioning technologies, have succeeded in creating their first ‘artificial total solar eclipse’ in orbit. The resulting coronal images demonstrate the potential of formation flying technologies, while delivering invaluable scientific data that will improve our understanding of the Sun and its enigmatic atmosphere.
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By European Space Agency
Video: 00:01:40 Proba-3 artificially created what is normally a rare natural phenomenon: a total solar eclipse.
In a world first, ESA’s Proba-3 satellites flew in perfect formation, blocking the Sun’s bright disc to reveal its fiery corona. This enigmatic outer layer burns millions of degrees hotter than the Sun’s surface and drives the solar storms that can disrupt life on Earth.
With its first artificial eclipse, Proba-3 has captured detailed images of this mysterious region, offering scientists new insights into our star’s behaviour.
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By NASA
Heading into a recent staff meeting for Johnson Space Center’s Business Development & Technology Integration Office, Jason Foster anticipated a typical agenda of team updates and discussion. He did not expect an announcement that he had been named a 2025 Rookie of the Year – Honorable Mention through the Federal Laboratory Consortium’s annual awards program.
Foster was one of only three technology transfer professionals across the federal government to be recognized in the Rookie of the Year category, which is open to early-career individuals with less than three years of experience. “It was definitely a surprise,” he said. “It was quite an honor, because it’s not only representing Johnson Space Center but also NASA.”
Jason Foster recognized at the Federal Laboratory Consortium Award Ceremony as a Rookie of the Year – Honorable Mention.Image courtesy of Jason Foster Foster is a licensing specialist and New Technology Report (NTR) specialist within Johnson’s Technology Transfer Office in Houston. That team works to ensure that innovations developed for aeronautics and space exploration are made broadly available to the public, maximizing their benefit to the nation. Foster’s role involves both capturing new technologies developed at Johnson and marketing and licensing those technologies to companies that would like to use and further develop them.
He describes much of his work as “technology hunting” – reaching out to branches, offices, and teams across Johnson to teach them about the Technology Transfer Office, NTRs, and the value of technology reporting for NASA and the public. “NTRs are the foundation that allows our office to do our job,” he said. “We need to know about a technology in order to transfer it.”
Jason Foster (left) visited NASA’s White Sands Test Facility in Las Cruces, New Mexico, with his colleague Edgar Castillo as part of the Technology Transfer Office’s work to capture new technology and innovations developed at Johnson and affiliated facilities. Image courtesy of Jason Foster Foster’s efforts to streamline and strengthen the reporting and patenting of Johnson’s innovations led to his recognition by the consortium. His proactive outreach and relationship-building improved customer service and contributed to 158 NTRs in fiscal year 2024 – the highest number of NTRs disclosed by federal employees at any NASA center. Foster also proposed a three-month NTR sprint, during which he led a team of seven in an intensive exercise to identify and report new technologies. This initiative not only cleared a backlog of leads for the office, but also resulted in more than 120 previously undisclosed NTRs. “We are still using that process now as we continue processing NTRs,” Foster said. On top of those achievements, he helped secure the highest recorded number of license agreements with commercial entities in the center’s history, with 41 licenses executed in fiscal year 2024.
“I am very proud of my accomplishments, none of it would be possible without the open-mindedness and continuous support of my incredible team,” Foster said. “They have always provided a space to grow, and actively welcome innovation in our processes and workflows.”
Jason Foster educated Johnson employees about the Technology Transfer Office and the importance of submitting New Technology Reports during the center’s annual Innovation Showcase.Image courtesy of Jason Foster A self-described “space nerd,” Foster said he always envisioned working at NASA, but not until much later in his career – ideally as an astronaut. He initially planned to pursue an astrophysics degree but discovered a passion for engineering and fused that with his love of space by studying aerospace, aeronautical, and astronautical engineering instead. In his last semester of college at California Polytechnic State University of San Luis Obispo, he landed a Universities Space Research Association internship at Johnson, supporting flight software development for crew exercise systems on the International Space Station and future exploration missions. “I got really involved in the Johnson Space Center team and the work, and I thought, what if I joined NASA now?”
He was hired as a licensing specialist on the Technology Transfer team under the JETS II Contract as an Amentum employee shortly after graduating and continually seeks new opportunities to expand his role and skillsets. “The more I can learn about anything NASA’s doing is incredible,” he said. “I found myself in this perfect position where literally my job is to learn everything there is to learn.”
Jason Foster holding up Aerogel during his visit to the Hypervelocity Impact Testing Laboratory at NASA’s White Sands Test Facility in Las Cruces, New Mexico. The visit was part of the Technology Transfer Office’s work to capture new technology and innovations developed at Johnson and affiliated facilities. Image courtesy of Jason Foster Foster celebrates three years with NASA this July. In his time at the agency, he has learned the value of getting to know and understand your colleagues’ needs in order to help them. Before he meets with someone, he takes time to learn about the organization or team they are a part of, the work they are involved in, and what they might discuss. It is also important to determine how each person prefers to communicate and collaborate. “Doing your homework pays dividends,” Foster said. He has found that being as prepared as possible opens doors to more opportunities, and it helps to save valuable time for busy team members.
Jason Foster practices fire spinning on a California beach. Image courtesy of Jason Foster When he is not technology hunting, you might find Foster practicing the art of fire spinning. He picked up the hobby in college, joining a club that met at local beaches to practice spinning and capturing different geometric patterns through long exposure photos. “It was kind of a strange thing to get into, but it was really fun,” he said. His love of learning drives his interest in other activities as well. Gardening is a relatively new hobby inspired by a realization that he had never grown anything before.
“It’s a genuine joy, I think, coming across something with curiosity and wanting to learn from it,” he said. “I think it especially helps in my job, where your curiosity switch has to be on at least 90% of the time.”
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By European Space Agency
Thanks to its newly tilted orbit around the Sun, the European Space Agency-led Solar Orbiter spacecraft is the first to image the Sun’s poles from outside the ecliptic plane. Solar Orbiter’s unique viewing angle will change our understanding of the Sun’s magnetic field, the solar cycle and the workings of space weather.
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