An international research team led by Harvard scientists has announced the first-ever detection of an atmosphere on an Earth-like rocky exoplanet, LHS 1140 b, orbiting within its star’s habitable zone, only 48 light-years away.

The researchers behind the historic discovery, which they are calling “a major milestone in the search for life on other planets,” said the detection of an atmosphere on an Earth-like rocky exoplanet offers the strongest evidence to date that worlds with similar compositions and temperatures to Earth that are also capable of supporting life could exist beyond our solar system.

Models Predicted First Earth-like Rocky Habitable Zone Exoplanet Atmosphere

In a statement announcing the detection of an atmosphere around a habitable-zone rocky exoplanet, the discovery was motivated by theoretical predictions suggesting that LHS 1140 b may contain an atmosphere. The planet was even more tantalizing because its orbit around its host red dwarf star allows for liquid water on its surface, a key ingredient for life as we know it.

Although thousands of exoplanets have been confirmed since 1995, including habitable-zone rocky worlds similar in size and composition to Earth, the team notes that determining whether any of these potential Earth analogs maintain an atmosphere. Like water, an atmosphere is considered a likely necessity for life to emerge.

“An atmosphere is essential for a planet to support life as we know it,” explained Collin Cherubim, the lead author of a study detailing the findings, who recently earned his Ph.D. in Earth and Planetary Sciences from Harvard University.

Robin Wordsworth, the Gordon McKay Professor of Environmental Science and Engineering and Professor of Earth and Planetary Sciences at Harvard, said that as recently as twenty years ago, astronomers still didn’t know if other, terrestrial-type planets “even existed.” However, he explained, they quickly found that this type of planet was common, including some orbiting within their star’s habitable zone.

“The next question was whether any of them had managed to keep an atmosphere,” the professor added.

Infrared Observations Confirm Historic First  

Before performing any direct observations, the team used computer models to predict what they might find on LHS 1140 b. As noted, those models predicted an upper atmosphere rich in helium. The models also suggested that the atmospheric helium was slowly escaping into space.

To test the model’s predictions, Cherubim and colleagues gained access to the Warm Infrared Echelle (WINERED) Spectrograph on the Magellan Observatory in Chile. The team noted that this powerful telescope allowed them to observe an alignment of LHS 1140 b and another planet transiting its star “on the same night.”

When analyzing the data, the team found that one of the planets appeared to lack any measurable atmosphere. However, as their models had predicted, helium was actively escaping from LHS 1140 b. The finding confirmed that this rocky exoplanet orbiting within its star’s habitable zone was actively maintaining an atmosphere.

David Charbonneau, the head of the Harvard Department of Astronomy and an astronomer at the Center for Astrophysics | Harvard & Smithsonian, and Cherubim’s co-advisor with Wordsworth, was initially skeptical because the entire concept was based on a mathematical prediction of a phenomenon astronomers had never witnessed directly. However, Professor Charbonneau ended up praising the student’s determination and follow-through, which led to the historic detection.

“Collin analyzed the planets we knew about and predicted that this one would have a helium atmosphere,” Charbonneau said. “Then he organized telescope time, got the data, and the detection was statistically rock solid.”

“Hopefully it’s just the First of Many More Observations to Come”

When discussing the implications of the findings, Cherubim noted that “this is the first time anyone has found an atmosphere on a rocky planet in the habitable zone of another star.” Professor Wordsworth agreed, once again noting that until now, planets in these categories with atmospheres had been purely theoretical.

“Now we know at least one has,” the professor said.

The data also suggest that LHS 1140 b’s atmosphere has likely survived for more than three billion years, roughly three-quarters of Earth’s existence. This durability makes LHS 1140 b an excellent candidate for future exoplanet atmosphere studies.

More broadly, the team said that using ground-based observatories to search for escaping gases, such as the helium detected leaving LHS 1140 b, “may become an important tool for studying atmospheres on rocky exoplanets.” They also note the potential value of atmospheric detection for astrobiologists searching for signs of life in the cosmos.

As for Cherubim, he plans on following up his historic discovery with a more detailed analysis of the planet’s atmospheric composition. He also said he would like to investigate the possible presence of surface oceans or other planetary characteristics typically associated with habitability and life. The entire team also said they would like to use Cherubim’s model to search for similar Earth-like, habitable-zone rocky exoplanets.

“This has been a model validation, and hopefully it’s just the first of many more observations to come,” Cherubim said.

The study, “Helium escaping from the atmosphere of a nearby rocky exoplanet orbiting in a habitable zone,” was published in Science.

Christopher Plain is a Science Fiction and Fantasy novelist and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him directly at christopher@thedebrief.org.

Our modern society depends heavily on communications and power networks that are highly susceptible to interference from solar storms, making these volatile space weather events a paramount concern for scientists.

Now, it turns out there may be more to fear than previously realized. Scientists are discovering that there may be no ceiling to the devastating effects solar storms may have on Earth, overturning what little sense of security may exist as a mere mathematical anomaly.

In a recent paper published in Nature, a NASA-led team discovered that the potential impact of solar storms on our technological infrastructure could be substantially more severe than currently recognized.

Solar Storms Reconsidered

According to new research, any past limitations perceived regarding the impact of solar storms on our planet are purely an illusion, which arises from imprecise data collection.

Previous observations of electric currents in the Earth’s upper atmosphere during solar storm events suggested a ceiling to how far they could increase. Yet the new paper claims that uncertainties in solar wind data are falsely giving rise to this idea.

The researchers say that the distance of the spacecraft taking solar wind measurements is the issue. Those spacecraft are millions of miles closer to the Sun than the Earth is, meaning that by the time those winds reach Earth, they have weakened considerably. Additionally, instrument error and the effects of the local plasma and field conditions all come into play.

All this, the researchers say, creates a mismatch between the measured strength of the wind and its effects on our planet’s electrical currents.

Correcting For Distance

The new findings contain one significant difference from existing research: they relied on observation platforms much closer to Earth to collect data, which included spacecraft such as NASA’s MMS and THEMIS.

Launched in 2007, THEMIS consists of five satellites that target the Earth, rather than the Sun, to study our planet’s magnetosphere and auroras. MMS consists of four spacecraft that also study the Earth’s magnetosphere.

Existing charts show the impact of solar winds on Earth leveling off at a certain threshold, which scientists had believed was the maximum saturation possible. However, in new solar wind strength data collected much closer to Earth, more accurately reflecting power at the time of impact, this saturation point disappeared. Instead, this data revealed that there is no ceiling on how heavily solar storms can charge the Earth’s electrical currents.

Solar Storm Impacts

Another crucial element in the NASA-led research is the statistical concept of regression to the mean, which holds that extreme measurements often change as more data come in. In this case, as more data on solar storm impacts on Earth recorded from various distances were collected, the plating effect disappeared. The authors note that similar effects occur in other areas of research, such as climate studies and chronic medical pain.

These new findings present a major challenge to our understanding of space weather. Scientists will now need to conduct many further observations to determine if any such ceiling exists. The threat to our infrastructure may be severe, as satellite communication underpins our modern society, not to mention the power grid, which keeps our world running.

For now, NASA continues to monitor solar storms to prepare for their potentially dangerous effects on our infrastructure, and in light of the new research, the potential for future challenges ahead may be greater than previously realized.

The paper, “Regression to the Mean Can Explain Saturation of Geomagnetic Storms,” appeared in Nature on July 15, 2026.

Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org, and follow him on Twitter @mdntwvlf.

A key component of the Orion Nebula had escaped detection by astronomers until now, according to a new study in Astronomy & Astrophysics.

An international team led by Juan Diego Soler at the University of Vienna used two of the world’s most advanced radio telescopes to map neutral atomic hydrogen gas across the nebula’s outer shell at unprecedented resolution. The new maps provide a clearer view of the celestial feature, and reveal a previously uncatalogued second bubble—a shell with much less mass than earlier estimates—and a four-light-year filament of gas extending from the structure.

The Orion Nebula’s Miscalculated Bubble

Neutral hydrogen emits a faint radio signal at a wavelength of 21 centimeters, making it possible to trace otherwise invisible gas between the stars. Soler’s team solved this by combining data from the Karl G. Jansky Very Large Array in New Mexico and the FAST telescope in China. The VLA provided high resolution, while FAST picked up faint, widespread signals. Together, they produced the first detailed hydrogen map of the extended Orion Nebula, at the same scale as earlier ionized carbon maps.

Earlier calculations based on ionized carbon estimated that the front half of the shell was about 1,100 times the mass of our Sun. The hydrogen observations paint a different picture, suggesting the shell actually weighs in at closer to 100 solar masses. “Measuring mass is fundamental,” Soler said, “because it tells us about the efficiency of these newly formed stars shaping their environment with wind and radiation.”

A shell with only a tenth of the previously assumed mass significantly alters calculations of how efficiently newly formed stars shape their environment. The researchers note that molecular hydrogen, which is not detected in either the hydrogen or carbon data, may account for some of the missing mass.

A Second Bubble

The hydrogen maps also revealed an uneven distribution of gas, indicating a second, smaller cavity within the main shell. The team searched catalogs of known stars and young stellar objects in the region but found no candidate at the bubble’s center. The source responsible for creating the cavity may not be the type of object included in current catalogs.

Daniel Seifried at the University of Cologne, a co-author on the study, pointed to what that means for the models astronomers build to explain regions like this one. “These stunning observations serve as a reference for many modern astrophysical simulations investigating the evolution of gas and stars in the Milky Way. These are the kind of images that challenge the theoretical models and numerical simulations that we use to understand how massive stars affect their immediate surroundings.”

Previous models generally treated Orion’s shell as the product of a single expanding bubble. The discovery of a second cavity, with no obvious source at its center, instead suggests the nebula was shaped by multiple episodes of stellar feedback.

An Unexpected Filament

The new maps also uncovered a filament of hydrogen extending about four light-years from the shell’s western edge. Previous carbon-based observations saw only the base of this structure. The filament contains about 80 solar masses of hydrogen and does not appear to be associated with any known group of young stars. Its origin is unclear; it could be gas leaking through a weak spot in the shell or a leftover from the original cloud that existed before the bubble formed.

Claire Murray of the Space Telescope Science Institute, another co-author, framed the discovery within the broader push behind the observations. “This study is an exciting demonstration of the power of the latest-generation radio telescopes to uncover new pieces to the star formation puzzle.” Despite being one of the galaxy’s most extensively studied star-forming regions, the Orion Nebula continues to reveal discoveries.

This survey is the first scientific result from the NeAtHood project, which aims to map atomic hydrogen across nearby star-forming regions accessible to the VLA and FAST telescopes. Soler and his colleagues now plan to apply the same approach to additional targets. “Orion is only the beginning. Our newly developed methods show how future interferometers will reveal the hidden structure and dynamics of the interstellar medium—even in regions that astronomers already believed they understood well,” Soler explained.

If one of the sky’s best-studied star-forming regions still contains hidden structures, other nearby nebulae may prove equally surprising as the NeAtHood survey expands.

Austin Burgess is a writer and researcher with a background in sales, marketing, and data analytics. He holds an MBA, a Bachelor of Science in Business Administration, and a data analytics certification. His work focuses on breaking scientific developments, with an emphasis on emerging biology, cognitive neuroscience, and archaeological discoveries.

For centuries, ancient seafarers have told tales of fabled lost lands. They have been known by many names—Ultima Thule, Hy-Brasil, the Fortunate Isles, and of course, the legendary lost city of Atlantis.

Now, scientists say Earth’s hidden plumbing system may be feeding one of its strangest ecosystems—an area on the Atlantic seafloor that conjures images of such legendary landscapes lost to time and memory.

Known as the Lost City hydrothermal field, this ancient Atlantic oddity is doing more than just broadening our view on how extremophiles thrive in some of our planet’s least hospitable environments: it offers a potential model for how extraterrestrial life may thrive elsewhere in our solar system.

In a recent paper published in Geophysics, Geochemistry, and Geosystems, an international team of researchers finally discovered the system behind these hydrogen- and methane-rich alkaline hot springs that feed the Lost City ecosystem. 

The white carbonate chimneys that emit these gases provide an alternative to sunlight as the Lost City’s primary energy source, allowing life to thrive in a challenging deep ocean environment.

Searching Near The Lost City

Those precious nutrients coming from these vents were created by underground reactions. It turns out that the water feeding the Lost City is likely part of a larger underground system, where extreme processes imbue the liquid with essential nutrients.

The discovery came from nearly a mile below the Atlantis Massif, a large block of Earth’s crust that forms an underwater mountain range. This dome-shaped region stretches for 10 miles and rises 14,000 feet above the ocean floor.

Geologists believe this formation originated between 1.5 and 2 million years ago, as tectonic plate movement pulled it out from beneath the Mid-Atlantic Ridge, forming a new feature on the ocean floor.

From aboard the Joint Oceanographic Institutions for Deep Earth Sampling (JOIDES) ship Resolution, scientists drilled their 4,160-foot-deep hole about 2,600 feet north of the Lost City. They were intrigued to find that the water recovered from the hole had a chemical composition extremely similar to that of water emerging from the Lost City vents.

Beneath The Ocean Floor

From their drill site, they pumped water from varying depths up to the surface for examination.

Roughly the first 1,500 feet consisted primarily of seawater and freshwater from the drilling process, yet at lower depths, they found water that had risen from beneath the rock. At the deepest depths, up to 80% of the sample came from these subterranean regions.

Their detailed analyses revealed that the water had reacted with the surrounding minerals to gain calcium while losing magnesium, a reaction that would require prolonged exposure to rocks at a temperature of at least 572°F. Despite this finding, the hole was much cooler when the team took their samples.

Typically, a water-rock reaction with gabbroic and ultramafic rock would produce such results that are high in calcium, yet with no magnesium. Other components, such as lithium, rubidium, cesium, and strontium, were found in the water at both the bore site and Lost City.

The findings are consequential for providing the first direct evidence of this extremely hot water circulating beneath the Atlantis Massif through gabbroic and ultramafic rock. In this hidden plumbing system, seawater reaches deep within oceanic plates, providing energy to these deep-sea environments and potentially supporting their microbial life.

Feeding The Lost City

As researchers have now demonstrated that hydrogen-enriched water can naturally form deep within the Earth through rock reactions, researchers say there are major implications for our understanding of the Earth and beyond. 

For one, it adds a new element to Earth’s energy cycles, explaining how life persists under such difficult, dark conditions. Secondly, it offers intriguing new ideas about how life might persist in extraterrestrial environments, as humans continue to search for it elsewhere in the cosmos. The strange conditions of the Lost City ecosystem are thought to be a potential model for how life could persist in the global oceans of ice-covered worlds such as Jupiter’s moon Europa or Saturn’s moon Enceladus.

However, some uncertainty about the samples does remain. Seawater, freshwater, and drilling contaminants were present in the samples, and the exact proportions attributable to gabbro or ultramafic rock are unknown. Also, while this is evidence for an underground connection between the borehole and the Lost City chimneys, it is not conclusive proof that they are connected.

Plans are already underway to return once the borehole has stabilized to collect pristine samples that will allow researchers to answer questions about where and how these reactions occur, as well as the amount of energy they add to the water. From the most inhospitable regions on Earth to the quest for organisms among the stars, the research underway deep within our oceans is providing new answers to how such life persists.

The recent paper, “Borehole Waters From Hole U1601C (Atlantis Massif) Provide Constraints for a Deep-Sourced Formation Water That (Could) Feed the Lost City Hydrothermal Field,” appeared in Geophysics, Geochemistry, and Geosystems on July 12, 2026.

Micah Hanks, Editor in Chief of The Debrief, also contributed to this reporting. 

Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org, and follow him on Twitter @mdntwvlf.

An innovative new drone dubbed the “Phantom Twist” can seemingly disappear from view, in a major new robotics advancement offering a close-to-invisible aerial platform.

Its name describes the drone’s rapid spinning motion, which rotates 25 times per second—too fast for the human eye to resolve—thereby acting as a sort of cloak shielding it from visible detection.

The Northwestern University engineering team behind the Phantom Twist revealed their drone during a recent talk at the Sydney, Australia, Robotics: Science and Systems 2026 conference on July 16.

Stealth Drones

“Most efforts to hide drones focus on making them look like their surroundings,” said Northwestern’s Michael Rubenstein, who led the work. “Instead, we asked whether we could design the drone itself around the way humans perceive motion. This idea of low visibility through persistent motion is something few people have explored.”

Hiding drones is not a new idea. Other engineers have attempted a variety of techniques, including camouflage, transparent materials, and light-bending to obscure the presence of drones and robots. However, all of those focused on the material the drone’s exterior was constructed from, allowing it to blend into the background. The Northwestern team’s innovation was in how the object moves.

To our eyes, fan blades disappear because they are moving so fast that our eyes cannot track them. The “motion blur” created at these speeds allows the Phantom Twist to almost disappear, leaving only a faint apparition perceptible to the eye. 

Nature Drones

While several military applications are immediately obvious, the team instead says their work could be useful in developing noninvasive wildlife and environmental monitoring. Loud drones can scare wildlife, disrupting them as they scatter, but by blending in, the Phantom Twist could capture a much more accurate picture of natural behaviors.

Their perception-based design eschews the traditional quadcopter design for a single propeller, with a body that spins in the opposite direction, creating the optical illusion that the drone essentially disappears.

“For a typical quadrotor drone, the propellers are spinning, but the robot is stationary,” Rubenstein said. “So, you still see its body. For our drone, the whole thing is rotating, so there are no stationary parts.”

Creating the Phantom Twist

Using AI and optimization algorithms, the Northwestern team began by generating 20,000 different arrangements of a drone’s propeller, motor, circuit board, and other necessary components. Eventually, the algorithm landed on the most promising configurations, after which the researchers simulated and superimposed them onto real-world backgrounds. 

Another computer model mimicked human perception, allowing the engineers to assign a perception score for how visible each design would be to human eyes. An algorithm then optimized those designs by moving components to minimize the visibility score even further.

“The design process was fully automated,” Rubenstein said. “Then, when we were confident that a drone met all our criteria, we built it.”

A Revised Drone

The key feature of this design is that the individual components are at such varying heights and angles that they do not overlap as it spins, maximizing the motion-blur effect and creating the appearance of a faint cloud rather than a solid object.

“The human eye takes time to accumulate signals, roughly analogous to the exposure time of a camera,” said Alexander, an expert in computer vision. “When an object spins quickly, we perceive it as blurring out and losing distinct features. Because this new drone is almost entirely transparent, its few opaque components are visually averaged with the background for an overall appearance of a slight haze.”

Currently impeding the drone from being even more imperceptible to the eye are the wires and support rods that remain visible, as well as the engine noise it produces, which is readily discernible. Going forward, the team plans to continue improving Phantom Twist in future iterations to incorporate more transparent materials and reduce the noise it produces.

Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org, and follow him on Twitter @mdntwvlf.

An international team of researchers has demonstrated a new biosignature detection method for distinguishing between abiotic and biotic apatite mineral samples on Mars using instruments already aboard the Perseverance Rover, rather than returning samples to Earth.

The team said their mineral-based biosignature detection approach was successful in identifying samples with nearly 98% accuracy and allows for “deeper time” searches for signs of life, given the longer-lasting nature of minerals compared to biological materials. They also suggest their approach could broaden the capabilities of upcoming rover and life-hunting missions without adding new tools or sensors.

Advantages of a Mineral-Based Approach for Hunting Biosignatures

In a study detailing the team’s technique, Robert M. Hazen from the Carnegie Institution for Science and colleagues explained that searching for life and biosignatures beyond Earth “is a central objective of astrobiology.” They also note that this research is complemented by studies exploring the origin and early evolution of terrestrial life. Still, they add, although identifying biosignatures remains a key challenge, “robust mineral biosignatures remain limited.”

For example, most proposed biosignature missions focus on organic molecules or searching for fossils preserved in sedimentary environments or aquatic environments, including the subsurface oceans of some of the solar system’s moons. However, there are few, if any, proposed missions searching for signs of life preserved in mineral records, which the team notes “can retain records of biological activity over much longer geological timescales”

On Mars, NASA’s Perseverance rover has meticulously collected soil and rock samples deemed most likely to contain biosignatures. However, efforts to send a future sample-return mission to the red planet to retrieve samples are currently stalled and may never be completed.

According to the study authors, there are flight-ready instruments “already deployed on the “Perseverance” rover and planned for deployment on the “Rosalind Franklin” rover capable of searching for signs of life in place rather than returning the samples to labs on Earth. However, they add, “to fully exploit these mission-limited yet information-rich tools, it is essential to efficiently extract as much diagnostic value as possible from the data they generate.”

To search for mineral-based biosignatures, the team focused its research on Raman spectroscopy.

Using Instruments Already Aboard Mars Rovers to Search for Life

“Raman spectroscopy is particularly attractive because it provides bond-specific information on crystal structure and chemical substitution in a nondestructive manner,” they explain.

The team also notes that the Raman spectra acquired by the rover’s instruments “are highly comparable to those obtained under laboratory conditions,” increasing the robustness of any possible life signal.

“This consistency enables direct translation of laboratory reference datasets to planetary environments,” they write.

However, they add, Raman spectra from natural geological samples are often complex, including “overlapping vibrational modes, heterogeneous backgrounds, and chemistry-dependent band shifts.” Until now, this complexity has made interpreting samples based on individual spectral peaks or qualitative inspection inherently challenging.

“Identifying reliable biosignatures that can be detected by flight-ready instruments, such as Raman spectroscopy, remains a central challenge in astrobiology,” the researchers explain. “Developing robust mineralogical indicators of life therefore represents a critical and complementary approach for planetary exploration.”

Approach Distinguishes Abiotic and Biotic Features

To test their approach, the team focused on the mineral apatite. A ubiquitous phosphate, the team notes that apatite can be found “in terrestrial and extraterrestrial environments.” Although apatite is a major component of biological formations such as teeth and bones, it also forms naturally, providing an opportunity to search for biosignatures over much longer timescales if scientists can differentiate the two.

“Here, we integrate Raman spectroscopy with interpretable machine learning to distinguish biotic from abiotic apatite, a ubiquitous phosphate mineral in terrestrial and extraterrestrial environments,” the researchers write.

First, Hazen and colleagues compiled 331 Raman spectra samples. Critically, they included only specimens with known origin attributes: biogenic, abiogenic, or synthetic.

Next, they used this data to extract 21 “band-resolved features.” This was accomplished by training a random forest classifier to identify the “most diagnostic” features of each sample.

“Determining the origin of a sample involves assessing multiple independently varying features of a Raman spectrum, including band positions, widths, and relative intensities, the type of multivariate analysis well suited to machine learning,” the study authors explain.

After some comparative analysis, the team ultimately determined that a sample’s carbonate band and the width of the dominant phosphate band, “reflecting chemical composition and crystal structure, respectively,” were the strongest indicators of biological, natural, or synthetic origin.

After using their method to check the 311 samples, the team said the model successfully  distinguished biotic from abiotic apatite “with classification accuracy exceeding 96%.” In fact, the team reported that their mineral-based biosignature detection method misidentified only one biotic apatite sample as abiotic and one abiotic sample as biological.

“Here, we show that biologically formed apatite can be distinguished from abiotic counterparts using interpretable machine learning applied to Raman spectra,” the study authors write.

Life Detection Across Diverse Planetary Environments

When discussing the potential implications of their new mineral-based biosignature detection approach, the team noted that their findings establish a “broadly applicable and mission-relevant strategy for deep-time archives and future planetary missions.” More broadly, the researchers note that their findings highlight the “growing importance of combining flight-ready analytical instruments with AI” to fully leverage datasets already captured by Mars rovers and other “in situ” planetary missions.

“As planetary exploration increasingly shifts toward autonomous decision-making and target selection, the integration of interpretable AI with mineralogical biosignatures offers a powerful and extensible framework,” they write.

Beyond mineral-based biosignature detection strategies, the research team notes that future life hunting missions will “increasingly rely on the joint interpretation of mineralogical and organic spectroscopic signatures.” These include on-board py-GC-MS measurements, infrared spectroscopy, luminescence, laser-induced breakdown spectroscopy, X-ray fluorescence, and “other analytic methods.”

Future approaches will increasingly rely on AI to analyze these disparate datasets, which the authors note will allow for biologically mediated patterns to be distinguished from natural or synthetic backgrounds “in a physically and chemically consistent manner.”

“In this context, such an integrative and interpretable framework provides a pathway toward autonomous, mechanism-informed life detection across diverse planetary environments, advancing the broader goals of planetary science in understanding habitability, biosignature preservation, and the coevolution of geology and biology,” the authors conclude.

The study “Mineral biosignature identification from Raman spectroscopy using machine learning” was published in PNAS Nexus. 

Christopher Plain is a Science Fiction and Fantasy novelist and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him directly at christopher@thedebrief.org.

Egyptian princesses may have trained extensively with weapons, according to a new archaeological assessment that suggests the weapons buried with their mummies were more than mere symbols.

The researchers examined five mummies of Egyptian Middle Kingdom royal women for a new paper published in Frontiers in Environmental Archaeology, finding that their musculature indicates they led physically active lives.

Their work offers new insight into a long-standing question: whether the weapons buried with these royal women served a practical purpose or were simply symbolic grave goods.

Discovering Egypt’s Mummies

“Members of the royal family, especially the women, were active participants in skilled, physically demanding activities such as archery and hunting,” said lead author Dr Zeinab Hashesh. “This conclusion is supported by the way their bones developed to sustain heavy muscle use, which corresponds directly to the weapons discovered in their tombs.”

On a western plateau overlooking the Nile Valley lies the Memphis Necropolis, a 19-mile-long series of funerary complexes. One of these, a collection of pyramids and shaft tombs known as Dahshur, includes the pyramid of Amenemhat III, where two of the mummies were recovered during excavations begun in 1894 by Jacques de Morgan. These first discoveries were King Hor and Princess Noub-Hotep.

Later in 1894, de Morgan began excavating Amenemhat II’s pyramid complex at Dahshur. There, in early 1895, he discovered what would later be identified as four daughters of the pharaoh: Princesses Ita and Khenmet, buried together in one chamber, and Princesses Itaweret and Sathathormeryt in another.

Only the remains of King Hor and Princess Noub-Hotep underwent scientific examination at the time of their discovery. Eventually, all six sets of remains were transferred to the Egyptian Museum in 1915, where they remained lost until their rediscovery in 2020.

Weapons of the Egyptian Dead

The complex was unusual because these women were buried with objects typically associated with men, including bows and arrows, and a dagger placed inside Princess Ita’s coffin.

The mummification techniques used on the remains were relatively crude compared with those employed in later Theban burials. As a result, the remains are poorly preserved, with soft tissues reduced to powder, some bones entirely missing, and the princesses’ skulls lost during the early 1900s. Fortunately, enough skeletal material survived to allow researchers to estimate their height, sex, age at death, illnesses, and injuries.

“Princess Ita was a young woman aged between 28 and 34 with strong upper-body muscle attachments, suggesting she habitually used weapons like maces or daggers,” said Hashesh. “Princess Khenmet was a woman in her late 30s or 40s who showed signs of thinning bones, but had very robust ligament attachments. Princess Itaweret was a young woman aged between 20 and 34 who survived broken ribs and foot fractures; her skeleton shows she was a skilled archer.” 

All four sisters’ bones showed signs of physically active lifestyles consistent with weapons training.

“We found pronounced development in the upper limbs of these individuals, which correlates to repetitive, high-intensity actions like pulling a bowstring or stabilizing a weapon, proving these activities were habitual throughout their lives,” explained Hashesh. “This directly explains the presence of bows, arrows, and maces in the women’s tombs; these were not just symbolic gifts but tools they actively used.”

A Hard Life, Even for Royalty

The researchers suspect that either a blow or a fall caused Princess Itaweret’s broken ribs, and noted that such injuries were common across all the sets of remains. They also discovered evidence of inbreeding, as the sisters’ spinal abnormalities suggest their parents were closely related.

“These injuries were most likely caused by accidents, falls, hard blows, or other impacts linked to an active lifestyle, whether through hunting, military training, or other demanding activities,” said Hashesh. “What is remarkable is that the injuries healed well, which suggests they had access to advanced medical care for their time.”

Work on these mummies remains incomplete, however, hampered by the loss of the skulls. Moving forward, the researchers would like to conduct a stable isotope analysis to better understand the nutritional deficiencies detected in the bones. 

“Our dream would be to go far beyond simply identifying the Dahshur royals,” said Hashesh. “We would try to tell their full life stories, their families, health, and even their political roles, with as much detail as possible. Beyond the science, we would preserve the remains, create 3D prints for teaching and virtual exhibitions, and display them alongside their jewelry, weapons, and funerary objects. All of this would be done with respect, ensuring the remains are presented ethically, just as they were originally buried.”

“Their objects and jewelry are truly fascinating, breathtaking in their craftsmanship. Yet, while archaeologists have long focused on preserving these treasures, the people themselves were often forgotten. Our study seeks to change that.”

The paper, “Bioarcheological Reassessment of Dahshur Royal Skeletal Remains from the Late Middle Kingdom (c. 1850 to 1700 BCE),” appeared in Frontiers in Environmental Archaeology on July 17, 2026.

Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org, and follow him on Twitter @mdntwvlf.

Last summer, astronomers were observing the near approach of a space object believed to be an asteroid that had been tracked since its discovery in 1998. However, in a surprising development, the object failed to appear where it was predicted to be after decades of observations.

Now, a team of researchers reports in a new study that this mysterious orbital body is no asteroid at all, but instead may be an elusive class of space objects that scientists are still working to fully understand.

The research, published in the journal Nature Astronomy, identifies the newly suspected reasons for this unexpected “dark” twist in the developing story of 1998 SH2, a celestial body once thought to be a common space rock that is now upending past thinking on how to protect Earth from potential impact risks.

1998 SH2’s August Surprise

Since its discovery in 1998, the object designated 1998 SH2 has been monitored by astronomers continuously, providing close to three decades of observations that inform us about its orbit, leaving what researchers thought would be little room for surprises.

That all changed last August as the anticipated return of 1998 SH2 approached. Based on radar observations, the object appeared to be absent from its expected orbital path—a mystery that initially baffled astronomers.

Eventually, once the near-Earth object was spotted again by Brazil’s Southern Observatory for Near Earth Asteroids Research, it had moved significantly beyond its expected path. But what could account for such an unusual display?

When AN Asteroid Goes “Dark”

Now, according to Jet Propulsion Lab and CalTech researcher Davide Farnocchia and colleagues, 1998 SH2 was likely steered off course as a result of jets of gas escaping from beneath the object’s surface—a phenomenon known as weak cometary outgassing—meaning that the suspected asteroid is actually probably a type of comet.

However, unlike most comets, this one showed none of the typical characteristics astronomers associate with them, including a glowing tail or coma. This helped to explain the confusion over its initial classification, and additional observations of layered composite imagery did finally reveal these features, albeit faintly.

This confirmation that the object was indeed releasing material meant that 1998 SH2 was a rare variety of space objects known as dark comets, enigmatic bodies whose subtle behavior falls somewhere between comets and asteroids.

Planetary Defense Implications

One of the more concerning aspects of the discovery involves 1998 SH2’s unexpected orbital shift, which presents the question of whether other suspected asteroids might turn out to be dark comets. If so, could any of these shifty space objects pose a risk to Earth?

Fortunately, Farnocchia and his colleagues say there is currently no indication that 1998 SH2 poses an impact threat to Earth in the foreseeable future. Still, the team’s findings do have important implications for planetary defense, since their findings underscore the possibility that additional near-Earth objects currently classified as asteroids may turn out to be hidden comets.

Given the unpredictable orbital shifts and changes in acceleration these objects display, challenges associated with identifying and tracking them could complicate long-term impact forecasts, and influence how future deflection missions are designed.

Fortunately, the team’s study also highlights beneficial findings, which include the possibility that a hidden population of dark comets could potentially resolve questions about how water was delivered throughout the early solar system, eventually making its way to a young planet Earth billions of years ago.

Additionally, such possibilities could help to explain past observations of enigmatic objects like ‘Oumuamua, the first confirmed interstellar object, whose detection in 2017 and unexplained acceleration during subsequent observations have fueled scientific debate over its origins for many years.

Farnocchia and his colleagues’ new paper, “Non-gravitational acceleration indicative of cometary activity of near-Earth object,” appeared in Nature Astronomy.

Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.

Welcome to this week’s installment of The Intelligence Brief… a controversy has erupted in recent days with the FCC’s approval of a proof-of-concept satellite that reflects daylight to Earth at night, in a move that has astronomers concerned. In our analysis, we’ll be looking at 1) the FCC’s approval of Reflect Orbital’s Eärendil-1 satellite, 2) what the company says about its sunlight mirror orbital technologies, 3) the sharp responses from the astronomical community, and 4) where things go from here as the demonstration satellite heads toward production.

Quote of the Week  

“While we fully support American technical innovation in space, this innovation cannot come at the cost of imperiling scientific research, which has been at the forefront of American innovation and global leadership for decades.”

– American Astronomical Society statement

If you enjoy the news and perspectives offered by The Debrief, make sure that you aren’t missing our stories by making us one of your “preferred sources” on Google News. You can simply follow this link to add The Debrief to your list of favorites, and you can read more about Google’s preferred sources in our article here.

---

RECENT NEWS from The Debrief

• Norwegian scientists have unveiled a new method for tracking silently moving objects underwater.
• NASA’s Webb Telescope may be on the brink of solving a supermassive black hole mystery.
• New research is revealing possible links between dark matter and a “hidden” fifth dimension.
• Archaeologists just made a discovery linked to the legendary hero of Homer’s The Odyssey.
• Get all the latest stories from The Debrief, with more breaking stories at the end of this week’s newsletter.

---

FCC Approves Launch of Satellite Designed to Reflect Sunlight to Earth’s Nightside

This week, in a controversial ruling that has sky watchers (and others) concerned, the U.S. Federal Communications Commission (FCC) approved the launch of an experimental satellite crafted to reflect sunlight onto Earth after sunset.

The move has seen significant pushback from astronomers, who now warn that the technology would likely interfere with scientific observations and alter the natural appearance of the night sky.

Dubbed Eärendil 1, the satellite is being developed by the California-based Reflect Orbital as a proof-of-concept for the company’s larger, and potentially even more impactful vision: as many as 50,000 orbiting mirrors capable of directing sunlight to different regions on Earth.

While astronomers have expressed concern over the implementation of such orbital systems, the company says its satellites would offer the possibility for providing illumination after dark in select areas, which could be used to extend the operation hours for solar powered facilities.

Eärendil 1: A Case Study in Controversy

Branding itself as “the sunlight company,” Reflect Orbital says in a statement at its website that it aims to provide “clean, abundant energy available on demand,” because “reliable access to affordable energy is the foundation of human progress, economic growth, and a healthier planet.”

The satellite, which shares its name with Eärendil the Mariner, a character from J.R.R. Tolkien’s mythos, will carry an 18-by-18-meter (59-by-59-foot) reflective Mylar surface that unfolds in orbit after launch. Operating roughly 625 kilometers (390 miles) above Earth, the spacecraft is designed to redirect sunlight onto specific target areas of approximately five kilometers (three miles) in width.

Although many are sounding the alarm about the potential consequences of such technology, the Reflect Orbital says it maintains strict exclusion zones where astronomical operations or “sensitive areas” exist, and that its technology can be carefully deployed only to regions identified as target areas.

According to a FAQ page on the company’s website, the light produced by Eärendil 1 and future members of the company’s constellation will be “contained within the spot” among several other safety features it promotes. The company also says it can turn off the light quickly, and disable it at any time to prevent light from reaching Earth.

“The light is not bright enough to start fires or harm eyes,” the company’s FAQ page states, “even when viewed through a telescope, and cannot be concentrated past maximum natural sunlight irradiance.”

The company’s CEO, Ben Nowack, has argued the concept could improve the economics of solar power overall, allowing Earth-based power systems the ability to harvest additional sunlight before sunrise and after sunset.

Criticism Abounds

The proposal has drawn criticism from several groups, particularly the American Astronomical Society (AAS), which urged the FCC to reject the application.

“The American Astronomical Society (AAS) is dismayed by the Federal Communications Commission (FCC) decision on 9 July to grant a license to Reflect Orbital,” the organization said in a statement following the FCC ruling. “As the AAS expressed to the FCC, Reflect Orbital’s proposed satellite, which would reflect sunlight back to Earth at night, carries the potential for significant harm to our members and the broader community of those who depend on a dark night sky.”

“This harm could include damage to sensitive research telescope equipment, potential flash-blinding of pilots and drivers, and — as Reflect Orbital stated in its own FCC filings — potential permanent eye damage to anyone looking through a mid-sized telescope,” the AAS statement adds, noting what appears to be a sharp contrast between information contained in FCC filings, and that which appears on the company’s website.

Further, research cited by the AAS suggests that a full constellation of Reflect Orbital satellites could increase nighttime sky brightness by a factor of two to three, even at remote observatories, due to atmospheric scattering of the reflected light.

“While we fully support American technical innovation in space, this innovation cannot come at the cost of imperiling scientific research, which has been at the forefront of American innovation and global leadership for decades,” the AAS statement concludes.

Beyond FCC Authority

However, in the wording featured in the agency’s approval, the FCC concluded that such concerns fall outside its authority, which is primarily limited to regulating the use of radio-frequency spectrum, adding that it believes the overall likelihood of injury resulting from the launch of the proof-of-concept satellite to be low.

In the meantime, while the FCC’s approval marks an early win for Reflect Orbital, the company has said that it is planning to have independent research commissioned to help assess the technology’s environmental and scientific impacts. Additionally, the company says it plans to coordinate with the National Science Foundation to help ensure that its efforts align with those of the broader scientific community.

Fundamentally, the AAS’s disappointment—a view expressed by other members of the scientific community, argues that the ruling presents broader questions about who should oversee the environmental consequences of future space-based illumination projects, especially if such systems end up becoming more widespread in the years ahead.

“In the absence of another licensing agency that could take these considerations into account, we believe that it is critical for the FCC to consider all of the impacts of the satellite’s use case,” the AAS said in its statement this week.

That concludes this week’s installment of The Intelligence Brief. You can read past editions of our newsletter at our website, or if you found this installment online, don’t forget to subscribe and get future email editions from us here. Also, if you have a tip or other information you’d like to send along directly to me, you can email me at micah [@] thedebrief [dot] org, or reach me on X: @MicahHanks.

Here are the top stories we’re covering right now…

Welcome to this special star-spangled edition of The Intelligence Brief… In this installment, as America celebrates its 250th birthday amid record-breaking summer heat and mounting pressure on the nation’s power grid, we take a broader look at the technological revolutions that have shaped the United States—and the artificial intelligence revolution now poised to redefine its future. In our analysis, we’ll be looking at 1) how successive innovations transformed American society over the past two and a half centuries, 2) why artificial intelligence may represent the next great technological leap, 3) the extraordinary scientific opportunities AI is already creating alongside the risks and disruptions it presents, and 4) why the choices we make today about this transformative technology could help determine the course of America’s next 250 years. 

Quote of the Week

“America was not built on fear. America was built on courage, on imagination, and an unbeatable determination to do the job at hand.”

— Harry S. Truman

If you enjoy the news and perspectives offered by The Debrief, make sure that you aren’t missing our stories by making us one of your “preferred sources” on Google News. You can simply follow this link to add The Debrief to your list of favorites, and you can read more about Google’s preferred sources in our article here.

---

RECENT NEWS from The Debrief

• Russia has now suffered up to 1.4 million casualties in Ukraine, exceeding all its wars since WWII.
• Scientists have solved the mystery of an unusual circular structure beneath the North Sea.
• Human laughter may hold a 15-million-year-old evolutionary secret, new research says.
• Get all the latest stories from The Debrief, with more breaking stories at the end of this week’s newsletter.

---

America at 250: The Heat is On

Depending on where you are at the time you’re reading this, you may have noticed the temperature. Safe to say, summer has arrived.

One reason involves the “heat dome” that is covering much of the East Coast and the Midwest, with temperatures topping 100 degrees across large portions of the U.S., including the nation’s capital. As a result, the country’s power system is undergoing inevitable strain as extreme heat warnings have prompted grid operators to warn about surges in air-conditioning use throughout the nation, with many systems expected to operate less than optimally amid such temperatures.

All of this arrives just in time for America’s 250th birthday, with Independence Day celebrations falling on a weekend that is certain to be memorable for more than just the extreme heat, since this year’s celebration marks our nation’s semiquincentennial.

“Reaching 250 years is a significant event for any nation,” read a statement by the Sandra Day O’Connor Institute in honor of the forthcoming holiday. “It offers a chance to learn more about how the United States began, how it grew, and how it has changed over time. Every era of American history has shaped the present in some way, from early settlements to westward expansion, from war and invention to civic achievements and cultural growth.”

Something else that this special Independence Day offers us is an opportunity to reflect on how successive technological revolutions have influenced our nation’s growth since its inception, and where the cutting-edge technologies of today are likely to carry us going forward.

America’s Tradition of Technological Revolutions

We’ve come a long way since 1776. Back in the days during which the Declaration of Independence was signed, the speed of information was constrained to how fast a horse could carry its rider, or how strong the winds were that could propel a ship across water.

Under such conditions, pens and ink were used to preserve ideas on paper that could take weeks to make its way from locations like Philadelphia to other parts of the colonies. With such technological limitations, human political organization was similarly constrained.

Over the last two and a half centuries, we have seen most of those limitations fall away, with new inventions advancing progress, and eventually being overtaken by even newer, bolder ideas and inventions. Our steam engines helped remove geographic constraints, only to be replaced by aircraft, automobiles, and conveyances propelled by electrical power.

Similarly, the telegraph helped collapse the imposition of time that once hindered communication; its successors, like radio, the telephone, the Internet, Smartphones, and a host of other mobile communications technologies, have now placed instantaneous global communication at our fingertips.

And now we are on the cusp of another great American technological transition: one that very likely will rival any that came before it.

The Rise of Artificial Intelligence

It is difficult to even compare artificial intelligence to any other potentially revolution-inducing technology in our nation’s history. As America turns 250 and we look back on the progress that has brought us to the present day, one must also wonder how history will look back on the advent of this technology: will we recognize the implementation of AI as another innovation that breaks significant barriers that constrained human achievement, as time and geography once did?

Or will the advent of AI be remembered differently? Science fiction affords us alternative scenarios that most of us are quite familiar with already, and the real possibility that AI could spell trouble for us in the years ahead remains ever-present. Where things go from here, understandably, has a lot to do with the question of what humans choose to use this technology for, and how we go about implementing it.

Yes, scientific progress is accelerating, and AI is helping with that. Discoveries are arriving faster not only because scientists are working harder, but because the tools they’re using—especially AI—are helping them achieve more, and increasing our productivity and overall capability to levels that dramatically exceed what humans alone can do.

From the design of new proteins in the lab and the identification of obscure exoplanets within mountains of astronomical data, to the acceleration of materials science and a range of other fields, much of what we are seeing AI help us achieve right now bears the promise of a brighter future. But should that hopeful vision for a better future be taken for granted?

There are obvious reasons for caution, since virtually every major technological revolution brings not only opportunities, but also disruption. New sources of technology replace old ones, and thereby require new skills to be leveraged. The result of this obsolescence often extends to those in the workforce whose expertise once propelled these predecessor technologies; once the technologies have fallen out of use (sometimes with remarkable speed), the human workers once tasked with building them are left having to find new professions.

Myriad examples of similar past technological scenarios exist that encourage such concerns. Nuclear physics gave us clean energy, but also nuclear weapons; the internet connected billions of people—and each day, it enables the spread of misinformation into our homes, along with the potential for unwarranted surveillance and cybercrime.

AI will almost certainly follow a similar pattern to every other major technological revolution that America, and the world at large, has ever seen. So the question isn’t one of whether it will change our society: we already know the answer to that.

The question here has more to do with how we will use this technology, and what we will allow it to do for us—and to us—as it progresses.

Palantir CEO Alex Karp’s Interesting CNBC Interview

To conclude on a somewhat odd, yet also an extremely relevant note in the context of what we’re discussing here, some interesting exchanges aired recently on CNBC’s “Squawk Box,” during a live segment featuring Palantir CEO Alex Karp.

Anyone who watches this will understand both the relevance, as well as my choice in characterizing it as “odd,” given the strange, rambling nature of Karp’s interview (admittedly, some have been a bit less gracious in how they’ve characterized the recent appearance).

Rather than discussing Palantir and Nvidia’s recent work for the United States government in assembling its new AI infrastructure, Karp appeared to have something else on his mind: the looming prospect of a financial bubble underlying the current boom in AI technology.

“Something has gone completely wrong,” Karp said at one point during one of the rambling exchanges, where he appeared to be addressing the token model currently employed by leading AI companies amid rising costs, as industry leaders continue to seek returns on investment.

“The basic view among enterprises in this country is I’m going to chillax and waste my time with tokens,” Karp said. In another portion of the diatribe, Karp aired his concerns about how current AI models have been “irresponsibly” oversold, which he called “dangerous for everyone, which is why I can give [AI] to all your adversaries but I can’t give it to the Department of War, or I can’t safely give it to an enterprise in this country, without being certain that the Alpha of that business could transfer to this model tomorrow, i.e. I have no business, no job.”

When chided by host Becky Quick for sounding angry, Karp shot back that “This is the voice of American business that is being channeled through me.”

“Are we really going to outsource the battlefield of this country to the consensus view in Silicon Valley?” Karp also said at one point. “That is effing insane.” The entire segment can be watched here.

Uncertainty is Our Business

Although Karp’s interview was odd, to say the least, the Palantir CEO raises some important points, and as evidenced by his demeanor during the CNBC segment, much of what he discussed appears to be weighing heavily on him.

It would be safe to say that he’s probably not the only one in Silicon Valley right now experiencing a degree of unrest and uncertainty over such issues, as the current situation with AI technologies in America and around the world progresses onward into uncertain territory.

Fortunately, America’s history shows that a major driving factor in its progress has been the conviction that the next horizon is worth pursuing, even when it’s uncertain.

Yes, the unforeseeable consequences of these nascent technologies, like AI, can be sobering at times.  While it seems inevitable that the same driving forces that have driven past industrial revolutions will also drive humans to build smarter, and increasingly more powerful machines, hopefully, we will also remember that wisdom is required in knowing how to use them.

If we can do that, then perhaps America’s progress can continue for another 250 years, and the technologies we are innovating in the present day can indeed help us to build a brighter future for tomorrow.

That concludes this week’s installment of The Intelligence Brief. You can read past editions of our newsletter at our website, or if you found this installment online, don’t forget to subscribe and get future email editions from us here. Also, if you have a tip or other information you’d like to send along directly to me, you can email me at micah [@] thedebrief [dot] org, or reach me on X: @MicahHanks.

Here are the top stories we’re covering right now…