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Exploring the Perilous Depths of the Chernobyl Reactor: A Man’s Daring Dive

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Anatoly Doroshenko is entering Chernobyl’s reactor No. 4 for essential radiation measurements.

Credit: Mykhailo Palinchak

The ruins of Chernobyl’s Reactor No. 4 are among the most hazardous locations on Earth. This site is not only treacherous but also heavily irradiated, enveloped in darkness, and encapsulated in a dilapidated concrete sarcophagus, which is being fortified with a new containment structure.

Scientists urgently need insights into the internal environment. One such scientist is Anatoly Doroshenko, a young researcher at the Institute for Safety Problems in Nuclear Power Plants (ISPNPP). His occupation is considered one of the world’s most perilous, requiring him to venture deep into the nuclear reactor remnants to gather readings and samples, often from as close as 8 meters from the core.

“I’m not scared,” Doroshenko stated, standing beside a model of Chernobyl within the ISPNPP lab located in the nuclear power plant’s exclusion zone. “Preparation has equipped me for this task, and embracing this moral responsibility is essential.”

“It’s a peculiar sensation, akin to summiting Mount Everest or exploring the ocean depths,” he adds, noting the continuous adrenaline rush he experiences.

Doroshenko is tasked with numerous responsibilities during each reactor investigation, but must maneuver between urgency and precision due to time constraints. “Understanding your environment is vital; self-control is crucial,” he emphasizes, repeating the last part earnestly.

“You must be aware that every surface is contaminated—knowing what you touch is essential to avoid personal contamination,” he explains. “It’s imperative to strategize since the time you can safely remain inside is limited. The desire to gain knowledge must be balanced with awareness of your surroundings.”

In low-risk areas of the reactor, Doroshenko dons a hat, protective gloves, and a respirator. In high-risk regions, he must wear a full-body suit, potentially layered with a polyethylene suit for dust protection. He also carries a lead apron, but its bulk can hinder movement in confined spaces.

As a young researcher, he has explored significant areas such as the main circulation pump, vital for cooling Reactor No. 4 and implicated in the safety tests leading to the 1986 disaster. “Visiting this pivotal site is crucial as we examine the destruction caused by the explosion,” he notes.

1991: Inspecting the interior of the sarcophagus containing Reactor No. 4 at Chernobyl

Credit: Images Group/Shutterstock

“Knowledge is our best protection,” asserts researcher Olena Paleniuk at ISPNPP. “Anatoly plays a crucial role here. Though we all often appear fatigued and somber, he excels in his responsibilities, and we lack a sufficient number of young experts skilled in dosimetry.”

Doroshenko’s supervisor, Victor Krasnov, noted that generations of scientists have ventured into the reactor post-1986 to collect measurements and install sensors. They navigate confined spaces filled with radioactive water and remnants of corium, a hazardous mix of molten fuel, concrete, and metal created during the disaster’s extreme heat.

“The initial explorers named various structures within informally—terms like elephant’s foot, cat house, and octopus beam,” recounts Krasnov. “Each route inside presents unique challenges due to utter devastation.”

Numerous risks abound, including the 2,200-ton upper bioshield, affectionately termed ‘Elena,’ dislodged during the explosion and now precariously tilted. Its potential collapse could unleash hazardous debris and a substantial cloud of radioactive dust.

1986 image of the ‘elephant’s foot’ within Chernobyl’s No. 4 reactor, a mass of molten fuel.

Credit: Photo 12/Alamy

Regular monitoring is crucial due to occasional surges in nuclear activity. The exact locations of all fuel material within the reactor remain uncertain, leading to periods of reactor activation.

As uranium or plutonium decays, it releases neutrons, which can trigger further fission reactions when absorbed by other unstable nuclei. High water levels can slow these neutrons and inhibit further reactions, a factor crucial to reactor safety management. Following the disaster, the sarcophagus created arid conditions, causing a peak in neutrons, while breaches allowed moisture and humidity to enter, diminishing neutron flux.

Undergoing the establishment of newer safety protocols, the low humidity currently decreases the likelihood of accidents, emphasizing the need for ongoing analysis by Doroshenko and his team to preemptively address any emerging issues.

Although stringent safety measures are enforced, it remains inherently perilous to traverse inside an exploded reactor. “We acknowledge the risks,” Doroshenko states. “My health concerns me, as neglect might lead to mistakes. While the long-term effects on my health remain unclear, adhering to radiation safety protocols allows me to mitigate those risks.”

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Source: www.newscientist.com

Discovering New Forms of Matter Hidden in the Depths of Uranus and Neptune

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Recent computational simulations indicate that icy giant planets like Uranus and Neptune may contain quasi-one-dimensional superionic carbon hydrides. This groundbreaking discovery could change how scientists perceive planetary interiors.

Diagram depicting hexagonal hydrocarbon compounds anticipated under conditions similar to those in Neptune. In this framework, carbon forms the outer helical chain (yellow), while hydrogen forms the inner helical chain (blue), aligning with the quasi-one-dimensional superionic behavior suggested by simulations. Image credit: Cong Liu.

Density measurements of Uranus and Neptune reveal that these colossal planets possess an unusual, hot, icy interlayer situated beneath an atmospheric envelope of hydrogen and helium, and above a rocky core.

While these layers are believed to comprise water, methane, and ammonia, extreme internal conditions likely result in exotic phases.

The physics associated with these high-pressure, high-temperature regions can lead to unconventional states of matter, prompting theorists and experimentalists to predict and recreate the phenomena they might encounter.

Dr. Cong Liu and colleagues at the Carnegie Institution for Science employed advanced computing and machine learning to conduct quantum physics simulations of hydrogenated carbon at pressures ranging from about 5 million to 30 million times atmospheric pressure (5-3,000 gigapascals) and temperatures of 4,000-6,000 K.

These simulations indicated the development of an ordered hexagonal framework where hydrogen atoms traverse helical paths, resulting in a quasi-one-dimensional superionic state.

Superionic materials are remarkable as they exist in a unique state between solids and liquids. Atoms of one type maintain their crystal arrangement, while atoms of another type gain mobility.

“This newly predicted carbon-hydrogen phase is particularly noteworthy because the movement of atoms isn’t entirely three-dimensional,” explained Dr. Ronald Cohen, also from the Carnegie Institution for Science.

“Rather, hydrogen preferentially migrates along distinct helical paths contained within the organized carbon structure.”

The direction of this atomic motion significantly influences heat and electrical transport within the planet’s interior.

This behavior has implications for understanding internal energy redistribution, electrical conductivity, and potentially the generation of magnetic fields in ice giants.

Additionally, this discovery broadens our comprehension of how simple compounds behave under extreme conditions and suggests that even basic systems can remarkably organize into complex phases.

“Carbon and hydrogen are prevalent in planetary materials, yet their combined behavior under giant planetary conditions remains poorly understood,” Dr. Liu remarked.

These findings are published in a study in Nature Communications dated March 16th.

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C. Liu et al. “Prediction of thermally driven quasi-one-dimensional superionic state of hydrogenated carbon under giant planetary conditions.” Nat Commun, published online on March 16, 2026. doi: 10.1038/s41467-026-70603-z

Source: www.sci.news

The Séance at Break Manor: A Gothic Horror Dive into Irish Mythology’s Eerie Depths | Games

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THere are two categories of fears. One will leave you stunned with an unexpectedly original way of cowering under a pillow. The other, slowly seeping beneath your skin, gently pricks the back of your neck, haunting you for weeks. The break etiquette seance fits into this latter category, exuding an atmosphere reminiscent of an Irish murder mystery set in the 1890s.

You will take on the role of a detective dispatched to the esteemed Blake Manor to investigate the mysterious disappearance of Evelyn Deane, which occurred just two nights before the Seance. Mystics from around the globe have gathered at the dilapidated mansion to reach out to the deceased regarding all the treasures Evelyn possessed, but can they truly connect with the other side? And what is the source of the shadowy presence? Numerous secrets await unraveling.




You need to be in the right place at the right time… Gameplay of Blake Manor’s Seance.
Photo: Spooky doorway

“Think of it as Gothic or folk horror,” states Dave McCabe, the lead storyteller. “Being in a location you shouldn’t be invokes a creeping dread, and each step you take feels perilous.”

As you navigate the house and converse with each guest, time slips away. You’ll need to strive to comprehend what’s unfolding. Solving the puzzles may require moving objects or discovering hidden codes. Furthermore, you’ll need to be alert and present to catch crucial information.

The mystery is steeped in Victorian spiritualism, reflecting the Maelstrom of Irish folklore. “We selected a pivotal moment in Irish mythology to set our narrative,” explains Paul Conway, the lead artist and CEO of developer Spooky Doorway. “This specific place serves as a conduit between ancient magic and supernatural occurrences, though I can’t divulge too much without spoiling the surprise!”

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“We are definitely exploring various Irish myths, pagan traditions, and ghost tales,” McCabe adds. While these elements may not always have a direct influence on the storyline, otherworldly entities linger just beyond the veil. Traditional Irish motifs, such as turnips—far more ominous than today’s Halloween pumpkins—are scattered across the estate. Expect to encounter a sudden flash of light something early on, as the library brims with ancient stories and legends for your perusal. However, don’t dawdle; time is of the essence in solving the mystery.

The developers take pride in their heritage and aim to foster a deeper appreciation for Irish culture and history. “I hope we can add another dimension to the awareness people have about Ireland and Irish heritage—beyond just St. Patrick’s Day or flat caps,” says McCabe. “And perhaps some visitors will be inspired to explore ghostly castles.”

Séance of Blake Manor is currently in development for PC. Release date: To Be Confirmed

Source: www.theguardian.com

The Massive Iceberg from the Past Created a Trench at the Depths of the North Sea

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Tabular icebergs are away from Antarctica ice shelves

James Kirkham

When the ice sheets covering much of Northern Europe were rapidly retreating about 18,000-20,000 years ago, urban-sized icebergs once drifted through the British coast.

James Kirkham During a survey in the Antarctic of England, his colleagues discovered preserved scour marks created by these giants, which were created when they ploughed underwater sediments. The long comb-like features are buried under the mud of the North Sea, but are still visible in seismic survey data collected for searches for oil and gas.

“We know about the degree of scouring and ancient sea level, so we can estimate that these bergs are probably five to tens of kilometers wide, and perhaps hundreds of meters thick.

In Antarctica, table-form or table-top icebergs are a spectacular sight. Some will rival even small states in the US from a regional standpoint, like the recent giants known as the A23A and A68A. They listen from the ice shelf – a wide floating protrusion of a glacier flowing from the glacier.

Therefore, the perception that tabular icebergs once existed in the North Sea clearly shows that they had both the sea edges of the British and Ireland ice sheets and ice shelves. And that means there may be some lessons for the future decline of Antarctica, says Keycam.

In the North Sea, the large iceberg’s straight trams are written by wavy valleys made by narrow keels of much smaller blocks of ice. In other words, there is a “change of administration” in which large icebergs are replaced by countless small icebergs when ice shelves are crushed in response to rising temperatures, says Keekam.

Radiocarbon dating of sediments indicates that this shift occurs between 20,000 and 18,000 years ago.

Observations question the idea that labours of megabergs like the A23A and A68A may signal the widespread collapse of Antarctic ice shelves.

Emma Mackey The University of Florida tracks tabular iceberg sizes with satellite data since the mid-1970s, finding this trend to be inherently flat.

“James’ research highlights the mines, which means that major birth events are not necessarily signs of instability or cause of alarm,” says McKee. “In fact, ice shelves are disintegrated by death by 1,000 cuts. You need to worry when you stop watching large-scale birth events.”

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Source: www.newscientist.com

First verified photo of a colossal squid in the ocean depths

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First confirmed live observation of a giant squid

ROV Subastian/Schmidt Ocean Institute

The giant squid, the planet’s largest invertebrate, was first photographed alive in its wild habitat.

For decades, giant squids like Kraken (Mesonychoteuthis hamiltoni) It was more myth than reality. Scientists only had a vague sense of its appearance from fragments of remains found in the stomachs of whales eating molluscs. In fact, it was those ruins that the species was officially described by zoologists in 1925.

Finally, in 1981, Antarctic fishermen happened to play a giant squid that lived in a fishing net. Since then, animals have been killed or washed sometimes as fishing baikatches or died on land.

Containers from last month Schmidt Ocean InstituteThe US-based nonprofit was investigating the South Sea near the South Sandwich Islands and was streaming footage from a remotely controlled deep-sea camera when online viewers flagged it that they might have just shot a giant squid.

Based on the hints, the researchers sent high-resolution footage to independent squid experts. Experts have confirmed that online viewers’ predictions are correct. The squid had a distinctive hook along the sucker on its eight arms, a characteristic of a giant squid. I was roaming 600 meters below the surface.

The giant squid is thought to grow up to 7 meters long and weigh up to 500 kilograms, but the squid caught between the camera was 30 cm long: baby.

“Every time you descend into the deep water, it’s amazing to find something new and exciting,” he says. Jyotika Virmani of the Schmidt Ocean Institute.

Giant squid It may have already been filmed Natural habitat for 2023, by researchers from another US-based nonprofit organization. Corosal – However, the quality of the footage was too low, so no sightings were confirmed. A new squid recording may suggest that the 2023 footage actually captures a giant squid. “In the southern oceans, they have the same size, the same color, and the same depth.” Matt Murennan At Kolossal, we are still waiting for more confirmation.

However, there are no footage of huge squids of adults in the wild yet, and the lives of these giant invertebrates are still mystical, says Steve O’Sheapreviously at Auckland Institute of Technology in New Zealand, he created the name “Colossal squid” in the early 2000s. He once touted the animals as “serious inhabitants of the deep sea,” but now he is convinced that “like a giant gelatinous mites, it envelops a column of water near the ocean floor.”

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Source: www.newscientist.com

Newly found predatory crustacean within the depths of the Atacama Trench

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of atacama trench It stretches along the eastern South Pacific, dropping to depths of more than 8,000 meters off the coast of northern Chile.

dursibela kamanchakaholotype female. Image credit: Weston others., doi: 10.1080/14772000.2024.2416430.

The deepest 45% of the ocean (6,000-11,000 m), the Hadar Zone, contains high levels of undiscovered biodiversity.

Most geological formations are characterized by grooves formed in subduction zones between tectonic plates, which are formed by a series of unique external and internal factors.

The Atacama Trench, or Peru-Chile Trench, is one of the most geographically isolated landforms, located beneath eutrophic surface waters and characterized by high sediment loads.

This trench is known to host highly distinctive faunal assemblages driven by a combination of these isolating factors.

“The deep sea is a vast trove of new species for science, and each discovery deepens our ecological understanding of these remote ecosystems,” said researcher Johanna Weston of Woods Hole Oceanographic Institution and colleagues.

“One such island-like ecosystem is the Atacama Trench, where unique endemic communities exist at hadal depths (more than 6,000 meters).”

“Unlike other Hadal subduction ditch communities, it is a predatory (non-predatory) amphipod It has not been documented or collected from the Atacama Trench. ”

The newly discovered species dursibela kamanchakathe first large active predatory amphipod discovered at these extreme depths.

This crustacean, about 4 cm long, uses specialized raptor appendages to capture and prey on small amphipods in food-limited areas of the Atacama Trench.

“Most interestingly, the DNA and morphological data indicate that this species is also a new genus, highlighting the Atacama Trench as a unique hotspot,” Dr. Weston said. .

The discovery was made during the 2023 Integrated Deep Ocean Observing System (IDOOS) expedition. R/V Abate Molina.

4 dursibela kamanchaka Individuals were collected using a lander at a depth of 7,902 m. Landers are untethered platforms used to shuttle scientific equipment, such as baited traps, to the ocean floor and back.

“The collaborative and integrative approach of this research is confirmed.” dursibela kamanchaka This is a new species discovered and highlights the ongoing discovery of biodiversity in the Atacama Trench,” said Dr. Carolina González, a researcher at the Instituto Milenio de Oceanografía.

“This discovery highlights the importance of continued deep-sea exploration, especially in the Chilean forecourt.”

“We expect more discoveries as we continue to study the Atacama Trench.”

This finding is reported in the following article: paper in a diary Systematics and biodiversity.

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Joanna New Jersey Weston others. 2024. A new large predator (family Lycoptidae, Eucilidae) hiding in the depths of the Atacama Trench. Systematics and biodiversity 22 (1): 2416430;doi: 10.1080/14772000.2024.2416430

Source: www.sci.news

Webb delves into the mysterious depths of Messier 82

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Astronomers using the NASA/ESA/CSA James Webb Space Telescope discovered the central starburst of Messier 82 (M82, NGC 3034, or Cigar Galaxy), a starburst irregular galaxy 12 million light-years away in the constellation A new image of the area was taken. of Ursa Major.

Messier 82 was observed by the NASA/ESA Hubble Space Telescope in 2006, showing a spiral disk, shredded clouds, and hot hydrogen gas right next to the galaxy. The NASA/ESA/CSA James Webb Space Telescope observed the center of Messier 82, capturing the structure of the galactic wind in unprecedented detail and revealing the characteristics of individual stars and star clusters. Image credits: NASA / ESA / CSA / Hubble / Webb / STScI / A. Bolatto, UMD.

Messier 82 is located approximately 12 million light years away. It can be seen high in the northern sky in spring, in the direction of Ursa Major in the north.

First discovered by German astronomer Johann Erath Bode in 1774, this galaxy is approximately 40,000 light-years in diameter.

Messier 82 is also called the Cigar Galaxy because of its elongated elliptical shape caused by the tilt of its star-like disk with respect to our line of sight.

This galaxy is famous for its unusually high rate of new star formation, with stars being born 10 times faster than the Milky Way.

Astronomer Alberto Borat and his colleagues at the University of Maryland led Webb's research. NIRCam (Near Infrared Camera) We will aim our instrument at the center of Messier 82 to closely observe the physical conditions that promote the formation of new stars.

“Messier 82 is thought to be the prototype of a starburst galaxy and has attracted a variety of observations over the years,” Borat said.

“Both the Spitzer Space Telescope and the Hubble Space Telescope have observed this target. With Webb's size and resolution, we can observe this star-forming galaxy and see all of this beautiful new detail.”

“Star formation remains a mystery because it is shrouded by a curtain of dust and gas, which poses an obstacle to observing this process.”

“Fortunately, Webb's ability to see into the infrared can help us navigate these ambiguous situations.”

“Furthermore, these NIRCam images of the center of the starburst were obtained using instrumental mode, which prevents very bright light sources from overwhelming the detector.”

“Even in this infrared image, dark brown dust tendrils are visible throughout Messier 82's bright white core, but Webb's NIRCam has revealed a level of detail that was historically hidden.”

“If you look closely toward the center, small green specks indicate areas of concentrated iron, most of which are supernova remnants.”

“The small red spots indicate regions where hydrogen molecules are illuminated by radiation from nearby young stars.”

“This image shows the Webb's force,” said Dr. Rebecca Levy, an astronomer at the University of Arizona.

“All the white dots in this image are stars or star clusters. We can start to distinguish between all of these small point sources, which will allow us to get an accurate count of all the star clusters in this galaxy. Masu.”

If you look at Messier 82 at slightly longer infrared wavelengths, you'll see clumpy tendrils, shown in red, extending up and down the galactic plane. These gaseous streamers are galactic winds blowing out from the starburst's center.

One of the research team's areas of focus was understanding how this galactic wind, caused by rapid star formation and subsequent supernovae, originates and affects the surrounding environment.

By resolving Messier 82's central region, astronomers were able to investigate where the winds originate and gain insight into how hot and cold components interact in the wind. .

Webb's NIRCam instrument was well-suited to tracking the structure of the galactic wind via radiation from sooty chemical molecules known as polycyclic aromatic hydrocarbons (PAHs).

PAHs can be thought of as very small dust particles that survive at low temperatures but are destroyed at high temperatures.

Much to the team's surprise, Webb's observations about PAH emissions highlight previously unknown fine structures in the galactic wind.

This emission, depicted as a red filament, moves away from the central region where the center of star formation is located.

Another unexpected finding was the similarity between the structure of the PAH emission and the structure of the hot ionized gas.

“It was unexpected that the release of PAHs resembled ionized gases,” Dr. Borat said.

“PAHs are not thought to survive very long when exposed to such strong radiation fields, so they are probably constantly being replenished.”

“This casts doubt on our theory and indicates the need for further investigation.”

team's paper will be published in astrophysical journal.

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Alberto D. Borat other. 2024. Observation of starbursts by JWST: Emission of polycyclic aromatic hydrocarbons at the root of the M 82 galactic wind. APJ, in press. arXiv: 2401.16648

Source: www.sci.news