In a University of Kentucky laboratory, three small spacecraft stand-ins slid across low-friction air tracks, nudging and pulling one another without thrusters, propellant, or physical contact.

Instead, they used carefully timed magnetic fields, a technique that could one day help future satellite swarms hold precise formations in space without constantly burning fuel.

The NASA and Air Force-backed study, set to be published in the September 2026 edition of Aerospace Science and Technology,  marks a step toward what researchers call electromagnetic formation flying, a proposed method for controlling the relative positions of satellites using onboard coils rather than conventional propellant-based thrusters.

In the study, researchers demonstrated a decentralized, three-satellite control system that used alternating magnetic field forces to maintain formation with centimeter-level precision, offering a possible pathway for future space telescopes, interferometers, gravity-wave detectors, and other distributed spacecraft missions.

“Spacecraft formation flying can advance a variety of space technologies such as distributed-aperture telescopes, gravity-wave detectors, and interferometers,” researchers write. “One challenge for spacecraft formation flying is that traditional propellant thrusters eventually deplete, and they can contaminate sensitive spacecraft components.”

The study, authored by scientists from the University of Kentucky’s Department of Mechanical and Aerospace Engineering, focuses on a longstanding problem in spacecraft engineering.

Many future missions may not rely on a single large spacecraft, but instead on groups of smaller satellites flying in carefully arranged formations. If those satellites can maintain their spacing and orientation with extreme precision, they could function together like a much larger scientific instrument.

For example, a distributed-aperture telescope could use multiple spacecraft separated by carefully controlled distances to achieve observing capabilities that might be difficult or impossible with a single monolithic telescope.

Similar formation-flying concepts have been proposed for space-based interferometers and additional missions in which the relative positions of spacecraft are central to mission performance.

However, keeping multiple satellites in formation is not easy. Standard spacecraft rely on thrusters, which consume limited propellant. Over time, that fuel runs out, limiting mission duration and maneuverability. Thruster plumes can also contaminate sensitive instruments, a concern on spacecraft carrying delicate optical, scientific, or electromagnetic sensors.

However, electromagnetic formation flying, or EMFF, offers a different possibility. Each spacecraft carries electromagnetic coils. When electric current flows through those coils, they create magnetic fields. Those fields interact with magnetic fields created by nearby spacecraft, producing attractive or repulsive forces that can alter the satellites’ positions relative to one another.

Put simply, the satellites can push or pull on each other using magnetism.

The idea is not entirely new. Previous work has explored electromagnetic formation flying between two spacecraft, including experiments using direct-current-driven coils.

The problem becomes much harder when the formation includes three or more satellites. In that case, every satellite’s magnetic field can interact with the others, creating a web of coupled forces that becomes increasingly difficult to control as the formation grows.

The new study approaches that problem using alternating magnetic field forces, or AMFF. Rather than driving the coils with steady direct current, the researchers use sinusoidal currents at specific frequencies.

The key insight is that two satellites generate a nonzero time-averaged interaction force only when their magnetic moments alternate at the same frequency. If they do not share a frequency, the average force between them is negligible.

That frequency-matching approach effectively allows the system to pair satellites electromagnetically. One pair can interact at one frequency, while another pair interacts at a different frequency.

By adjusting the amplitude of each sinusoidal signal, the satellites can control the strength of the force between each pair without requiring a centralized controller to solve the entire formation’s motion at once.

“Only pairs with a common frequency can generate a nonzero time-averaged intersatellite force, and that force is determined solely by the amplitudes at the common frequency,” researchers write. “The method in this paper is decentralized, which means that each satellite has access to measurements of its position and velocity relative to only its local neighbor satellites.”

Centralized control can work in smaller systems, but it can turn computationally clumsy as satellite formations grow. A scalable system would need each spacecraft to make local decisions based on nearby neighbors, rather than requiring a single controller to calculate every force across the entire formation.

To test the idea, the researchers built a ground-based experimental platform using three custom electromagnetic actuation system units placed on linear air tracks.

The air tracks allowed the units to move with low friction, simulating one-dimensional relative motion between satellites. Each unit included an electromagnetic coil, batteries, power electronics, an Arduino Due microcontroller, wireless communication hardware, and laser range-finding sensors for measuring relative position.

In the three-satellite setup, the center unit was driven by a sum of two sinusoidal currents, while each outer unit was driven by one of those frequencies. This allowed the center unit to interact independently with each outer unit, demonstrating the central premise of frequency-multiplexed magnetic control.

In closed-loop experiments, the three-satellite system achieved formation in less than 30 seconds. The maximum steady-state formation error was less than plus or minus 0.01 meters, or about 0.4 inches. The mean steady-state formation error was less than plus or minus 0.001 meters, or about 0.04 inches.

Those numbers demonstrate that the method did more than produce a magnetic tug in a lab. It allowed multiple units to settle into a desired formation using local feedback and alternating magnetic fields, while avoiding the coupling problem that has limited electromagnetic control for larger formations.

The researchers also compared the experimental results with computer simulations. While the simulations generally matched the observed behavior, the team noted some differences caused by real-world hardware factors, including sensor interference, current saturation, possible misalignment, airflow disturbances along the air tracks, and unmodeled magnetic effects.

Those caveats are important. This was not a spaceflight demonstration, and the system was tested only in one dimension. Real spacecraft would operate in a far more complex environment, where microgravity, radiation, extreme temperature swings, atmospheric drag in low Earth orbit, gravitational forces, Earth’s magnetic field, and equipment restrictions would all matter.

Researchers also note that traditional thrusters may still be needed for orbit maintenance, orbit transfers, or controlling the overall center of mass of a satellite formation.

In essence, this is not a replacement for all spacecraft propulsion. It is better understood as a possible propellantless method for controlling the relative positions of satellites once they are already in orbit and operating as part of a formation.

Still, that limitation does not diminish the possible impact. If electromagnetic formation flying can be scaled and adapted for real spacecraft, it could reduce propellant demands for future distributed missions. That could extend mission lifetimes, reduce contamination hazards to sensitive instruments, and enable spacecraft formations more flexible than today’s architectures.

The research was supported in part by the National Aeronautics and Space Administration (NASA), the National Science Foundation, and the Air Force Office of Scientific Research.

The funding mix reflects the dual scientific and strategic interests in the work. NASA has clear reasons to explore precise formation flying for future space observatories and scientific missions. The Air Force, meanwhile, has an obvious interest in satellite coordination, maneuverability, and resilient distributed space systems.

The study’s most intriguing contribution may be its demonstration that magnetic-field-based satellite control can be both decentralized and scalable.

Rather than treating a multi-satellite formation in a single complicated system that must be controlled from the top down, AMFF allows each satellite to manage interactions with its neighbors using assigned frequencies. That could become increasingly valuable as space missions move toward constellations, swarms, and distributed architectures.

Researchers caution that additional work will be needed to move beyond one-dimensional air-track experiments and toward three-dimensional testing, more realistic sensing and control hardware, and, eventually, on-orbit validation.

Additional coils would be needed for three-dimensional position control, and relative attitude control could require additional actuation frequencies for each interacting satellite pair.

Nevertheless, the laboratory results show that the underlying concept works in a three-body system, which is exactly where the hard part begins.

Two satellites can pull or push on each other relatively easily. Three satellites introduce the coupling problem that makes electromagnetic formation flying difficult. By demonstrating three-satellite control with alternating magnetic fields, the study delivers experimental evidence that the frequency-based solution can work.

For forthcoming space missions, that could be a meaningful step. The next generation of telescopes and orbital instruments may not always be built as single enormous spacecraft. They may be assembled virtually, with multiple satellites flying together as one coordinated machine.

If so, keeping those satellites precisely arranged without wasting propellant could become one of the enabling technologies of future astronomy, Earth observation, and national security space systems.

“This article presented a 3-satellite experimental demonstration of decentralized EMFF using AMFF,” researchers conclude. “The settling time and steady-state formation error achieved in these experiments demonstrate that this approach is most likely capable of meeting requirements for satellite constellation reconfiguration and maintenance, thereby addressing the need for propellant-free formation flying.”

Tim McMillan is a retired law enforcement executive, investigative reporter and co-founder of The Debrief. His writing typically focuses on defense, national security, the Intelligence Community and topics related to psychology. You can follow Tim on Twitter: @LtTimMcMillan.  Tim can be reached by email: tim@thedebrief.org or through encrypted email: LtTimMcMillan@protonmail.com 

For five years, an elderly woman with advanced Alzheimer’s disease had spoken mostly in single words, needed help walking, and showed little spontaneous interaction with the people around her. Then, roughly 19 hours after receiving a high dose of psilocybin-containing mushrooms, she emerged from a prolonged, deep sleep-like state and began talking about her life.

The striking episode, described in a new case report published in Frontiers in Neuroscience, does not show that psilocybin reverses Alzheimer’s disease. The researchers are careful to stress that this was a single patient, observed in a real-world private clinical setting without brain imaging, formal sleep monitoring, or standardized cognitive testing.

Still, the study’s authors say the case raises the interesting possibility that in late-stage dementia, some functional abilities may indeed remain dormant rather than be completely lost.

“Advanced Alzheimer’s disease is generally regarded as a stage of irreversible functional decline,” researchers write. “This case documents transient multidomain functional improvement in advanced Alzheimer’s disease following psilocybin administration.”

The case involved a Japanese-American woman in her 80s with a 10-year history of Alzheimer’s disease. The patient was described as being in an advanced stage of dementia, with the previous five years being noted for severe decline.

Her speech had become mostly monosyllabic, and she had chronic urinary incontinence, executive dysfunction, dysphagia, dependent mobility, flat affect, prolonged somnolence, and a severe reduction in spontaneous communication.

Her diagnosis had been made clinically about a decade earlier, based on a steadily progressive neurodegenerative course, memory impairment, language reduction, executive dysfunction, and functional decline.

The intervention was a single oral dose of 5 grams of psilocybin-containing mushrooms from the “Enigma” strain. Researchers note that no established psilocybin dosing framework exists for advanced dementia, and the dose was high by almost any comparison.

Recreational users commonly describe 1 to 3 grams of dried Psilocybe cubensis mushrooms as a typical range, while doses around 3.5 grams or more are generally considered strong. A 5-gram dose is often treated as an especially intense experience. However, direct comparisons are imprecise because psilocybin content can vary widely between mushroom species, strains, batches, and even different parts of the same mushroom.

The study also notes that the dose was “relatively high compared with dosing approaches commonly used in modern clinical trials,” which typically use carefully measured amounts of purified psilocybin rather than whole mushrooms.

One month later, after some improvements persisted, the patient underwent a second supervised session using 3 grams.

The first session produced a dramatic acute response. The patient experienced autonomic activation, profuse sweating, suspected hyperthermia, and what the researchers describe as a prolonged deep sleep-like state. Exact temperature measurements were not available.

The study’s timeline shows that the first 12 hours were dominated by autonomic and sleep-like effects. At about 19 hours, the patient spontaneously awakened and produced roughly four hours of autobiographical speech.

By the first day, she showed increased alertness and recognition of family. By the second day, she was independently walking. By days two and three, she was dressing herself and showing spontaneous initiative. Around the same time, her diapers remained dry, including at night.

The improvement in continence was particularly notable to researchers because urinary control depends on more than a single simple reflex. It requires awareness of bodily signals, executive inhibition, and coordination among brain networks affected by dementia. The report states that the patient remained continent one month after the initial session, which was one reason a second session was performed.

During that second session, the patient reportedly remained more verbally expressive and described positive imagery involving surfing with her son on a peaceful island.

Researchers also observed improved facial expressivity, emotional reciprocity, spontaneous humor, and greater agility while walking. At one point during follow-up, the patient spontaneously said, “It is pleasant to come here.”

The study’s broader importance is in what it may suggest about the brain in advanced neurodegenerative disease. Alzheimer’s is usually understood as a progressive condition in which neurons and networks progressively deteriorate, stripping away memory, communication, mobility, and autonomy. By the advanced stage, treatment is largely supportive, and meaningful functional recovery is generally considered unlikely.

Psilocybin, however, is known to transiently alter large-scale brain dynamics via activation of the serotonin 5-HT2A receptor. Researchers point to prior human neuroimaging studies showing changes in default mode network integrity, network segregation, and functional connectivity after psilocybin administration. They also cited preclinical research suggesting psychedelics may promote structural and functional plasticity, including dendritic growth and synaptic remodeling.

That does not mean psilocybin repaired the patient’s Alzheimer’s disease. Instead, researchers suggest a more measured interpretation. The drug may have temporarily altered brain network activity, allowing remaining functional systems to reintegrate or become accessible again, at least for a limited period.

The report does not claim that plaques, tangles, or neurodegeneration were reversed. It also does not show that other patients would experience similar results. Because this was a single case, there was no control group, no placebo comparison, no formal biomarker confirmation, and no standardized cognitive testing to measure the degree of change.

Researchers acknowledge that mixed or alternative neurodegenerative contributions, including vascular components, cannot be fully excluded. Although they found no evidence of acute delirium, intoxication, or another acute neurological diagnosis during the observation period, the case remains observational. Causality cannot be established, and fluctuations in neurodegenerative disease cannot be completely ruled out.

The safety picture is also incomplete. While no severe persistent adverse effects, prolonged agitation, clinically significant cardiovascular instability, persistent psychotic symptoms, delayed neurological deterioration, or delayed medical complications were observed during follow-up, the acute phase included suspected hyperthermia and profuse sweating. In frail elderly patients, especially those with advanced dementia, such responses could carry serious risks.

For that reason, the findings should not be read as a green light for unsupervised psychedelic use in dementia patients. Psilocybin is still a powerful psychoactive compound, and older adults with complex neurological disease may be especially vulnerable to complications.

Ultimately, the value of the report doesn’t lie in providing a treatment recommendation but in documenting an unusual clinical observation that researchers say warrants controlled investigation.

The case also lands amid a flood of scientific interest in psychedelics as tools for studying brain plasticity, perception, memory, and large-scale network dysfunction.

As The Debrief has previously reported, recent brain-imaging work has found that psilocybin can temporarily dissolve familiar brain-network patterns tied to the sense of self, while other studies suggest psychedelics may redirect visual processing toward memory-related regions. Additional research has analyzed how a single dose of psilocybin may produce lasting brain changes, how the compound can reshape neural pathways associated with depression, and how psychedelic effects may be influenced by factors such as exercise, food restriction, and immune signaling.

However, most clinical work with psilocybin has centered on psychiatric conditions such as depression, anxiety, PTSD, and substance use disorders.

More recently, researchers have begun asking whether similar neuromodulatory effects might have relevance for people with mild cognitive impairment or early Alzheimer’s disease.

Published clinical data involving advanced dementia remain extremely limited, which is why the new report is best understood not as evidence of a treatment, but as a provocative case study that may help guide future controlled research.

This recent case does not prove efficacy, but it questions assumptions about what may remain possible in a brain already deeply affected by Alzheimer’s disease.

If future studies find similar effects under supervised conditions, the implications could be significant, not only for dementia care but also regarding understanding how much latent function can persist beneath the outward appearance of severe decline.

“Residual functional capacity may persist in advanced Alzheimer’s disease and may become transiently accessible following psilocybin induced modulation of large-scale brain networks,” researchers conclude. “Systematic investigation is warranted.”

Tim McMillan is a retired law enforcement executive, investigative reporter and co-founder of The Debrief. His writing typically focuses on defense, national security, the Intelligence Community and topics related to psychology. You can follow Tim on Twitter: @LtTimMcMillan.  Tim can be reached by email: tim@thedebrief.org or through encrypted email: LtTimMcMillan@protonmail.com