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A seven-dimensional black hole model proves that Stephen Hawking was right, to say the least.

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For a long time it was thought that black holes could only grow, since nothing escapes from them. Later, Stephen Hawking dismantled this theory, pointing out that radiation can come out of its interior and that, in fact, with this process the black hole it is fading away little by little. This hypothesis generated a new paradox; since, according to quantum mechanics, information cannot be created or destroyed in a quantum system. If the information cannot be destroyed, when the black hole disappears, where does all the information it stored go? This question has been a mystery until a team of scientists from the Slovak Academy of Sciences It occurred to him to do simulations in a 7-dimensional system. A reminder about black holes. a black hole It is an astronomical object so massive that its gravitational pull does not allow anything to escape from it. Not even the light. At a certain distance from the black hole is the event horizon, which is that point of no return from which everything is attracted towards its interior. Hawking radiation. In the 1970s, Stephen Hawking launched a hypothesis which destroyed the idea that nothing can escape from a black hole. According to him, if we take quantum physics into account, there is something that can do it. Heisenberg’s uncertainty principle states that a vacuum is not empty as such. Particle-antiparticle pairs continually form and appear and disappear. If this occurs in the vicinity of the event horizon, it could be that one of these particles is attracted towards the black hole, while another manages to escape from it, being slightly beyond the point of no return. That exhaust extracts energy from the black hole. This is what was called Hawking radiation. Disappearing black holes. We have all heard the famous formula from Einstein’s theory of relativity: E = mc². Since c is a constant, if there is energy, there must also be mass and, therefore, if energy is lost, for the constant to be maintained, mass must also be lost. That means that every time a black hole loses energy it is also losing mass. They are very massive objects, they would take a long time to turn off, but they finally do. The paradox arrives. Initially, many colleagues saw Hawking’s hypothesis as nonsense. However, today it is much more accepted. However, it is undeniable that it poses problems, such as the black hole information paradox. Where does the information go? Twisting space-time. The solution to the mystery has been possible by putting aside the theory of general relativity and analyze the problem with a somewhat more complex one: the Einstein-Cartan theory. The first points out that mass and energy can curve space-time. On the other hand, the second points out that it can also twist. For scales that are not excessively small there is no difference. However, when moving to tiny scales and therefore very high densities, This torsion plays an important role. A 7D model. Quantum physics models are often made in 4 dimensions: the three we all know and time. However, the authors of the recently published study took three more into account, so that the effects of the Einstein-Cartan torsion could be analyzed. Thus, they saw that when the matter of a black hole collapses its density increases greatly and, therefore, the twisting of space-time is detected. This gives rise to a repulsive effect, which counteracts the gravitational attraction that would normally take place in the engrossing hole. As a result, the evaporation of the black hole stops, which remains in a stable state, generating a remnant with a mass of 9×10⁻⁴¹ kg. A remnant with a lot of information. This tiny remnant is capable of storing all the information of the matter that the black hole contained. Specifically, these scientists’ models suggest that the remnant of a black hole the size of the Sun could store up to 1,515 × 10⁷⁷ qubits of information. Therefore, Hawking’s hypotheses are still valid and there is not even a paradox that dismantles them. At least this is not the lost information. Image | ESO (Wikimedia Commons) | ASA/Paul Alers (Wikimedia Commons) In Xataka | In 2009 Stephen Hawking hosted “the party of the century.” No one came precisely because Stephen Hawking organized it

If you think that renovating your house is urgent, think about this building in Ukraine. Its hole is so big that it is a danger for Europe

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He Chernobyl accident released so much radiation that some areas they remain uninhabitable almost four decades later. In fact, the plant continues to house materials capable of remaining dangerous for thousands of years. Therefore, keeping them under control is one of the greatest engineering challenges ever faced in Europe. A challenge that a drone has put to the test. It was to last a century. The story we tell it a few months ago. The gigantic steel arch built over Chernobyl reactor 4 was conceived as a definitive solution to contain the worst nuclear accident in history for at least a hundred years, a colossal structure designed to isolate the ancient “sarcophagus” and buy humanity time. More than 100 meters high and capable of housing entire monuments inside, this system had to resist extreme conditions and allow the safe decommissioning of the reactor, encapsulating hundreds of tons of radioactive material that remain active decades after the disaster. The impact that changed everything. But everything changed in February 2025when a drone attack in the middle of the night pierced that shell seemingly invulnerable, opening a breach in the structure and exposing a system that was never designed to operate in a war environment. Although there were no immediate leaks or casualties, the damage compromised critical functionsespecially ventilation that controls humidity and prevents corrosion, introducing a silent but growing risk that could degrade the structure in a few years. What is still hidden under the steel. Under the damaged arch remains an environment extremely unstable: remains of the reactor, tons of nuclear fuel and melts of highly radioactive materials that continue to react slowly. The old “sarcophagus,” hastily built in 1986, was never structurally reliableand is actually completely dependent on the new cover to maintain the insulation. In other words, if that balance fails, the risk is not immediate, but potentially devastating, with the possibility of release radioactive dust that the wind could disperse throughout Europe. A “reform” as expensive as it is complex. System restore will not be neither quick nor easysince it involves working in conditions of high radiation, with strict limitations on time and exposure for operators. Temporary solutions barely contain the most urgent damage, while full restoration will require rebuilding highly specialized internal layers within a structure designed as a technical “sandwich”. We are talking about an estimated cost that exceeds 500 million of euros, a figure that reflects both the technical complexity and the hostile environment in which repairs must be carried out. The war enters Europe’s greatest nuclear risk. If you like, the incident it is not isolatedbut part of a context in which nuclear infrastructure have become exposed elements within an active conflict. Paradoxically, the Chernobyl exclusion zone that we had to protect from any danger has been the scene of military operationstroop movements and constant overflights of missiles and drones, which multiplies the risk of new impacts, whether accidental or intentional. In that scenario, even a technical failure or trajectory error could trigger consequences continental in scope. A reminder of what never ended. They remembered in a special from the Financial Times this week that, decades after the accident, Chernobyl remains the same latent threat, one that requires constant vigilance and international cooperation, and the drone impact has revealed the fragility of the systems designed to contain it. The infrastructure that was to definitively close the disastrous episode of 1986 now faces a new type of risk, thus demonstrating that nuclear safety depends not only on engineering, but also of geopolitical stabilitya (and common sense). In that delicate balance, each crack is not just a structural failure, but a warning about the limits of our ability to control the consequences of our own creations. Image | EBRD In Xataka | Drones in Ukraine have mutated into a system reminiscent of the Alien universe: an exoskeleton turns troops into super soldiers In Xataka | Iran is exploiting the US’s weak point: it is not its F-35s or its Patriot missiles, it is the bill every time they take off

We thought that the heart of the Milky Way was an immense black hole. Mathematics has changed this idea for us

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Science advances, and this also means rewriting what we believed to be ‘absolute truth’ within different fields of knowledge. For example, for decades the scientific consensus has been unwavering in pointing out that in the heart of the Milky Way, about 27,000 light years from Earth, there is a huge supermassive black hole. But now this is not so clear thanks to a new study who has “seen” something even more interesting in this location. Breaking rules. It has been a study published this year the one who has proposed that the “monster” that governs our galaxy is not a black hole, but an ultradense core of dark matter. A compact object of almost four million solar masses that a priori would be composed entirely of fermionic dark matter. How do they know it? To support this bold claim, researchers have used the RAR model. This is very important, since, unlike the classical theory, which separates the central black hole from the halo of dark matter that surrounds the galaxy, this new approach unifies both concepts into one. In this way, it is proposed that dark matter particles are highly concentrated in the galactic center, forming a compact and massive nucleus, while on the outskirts they are diluted, forming the well-known and extensive dark halo. The big question. If it’s not a black hole, why does it “look” like one? And it is something normal that passes through our minds, especially after the year 2022 when the Event Horizon Telescope (EHT) gave us the first “photograph” of Sgr A* where a bright ring could be seen surrounding a deep central darkness. And although this could be definitive proof that there is a black hole at the center of our galaxy, this is not the case. This is where previous key work published in 2024 comes into play, which pointed out that a dense core of fermions illuminated by an accretion disk generates a “shadow” visually indistinguishable from that cast by a classical black hole. That is, this dark matter is disguised to be able to deceive our telescopes when taking different measurements. Mathematical tests. In addition to this interesting theory, the scientific team has subjected it to a rigorous statistical examination using complex simulations and Bayesian analyzes to verify its robustness. Here they have shown that this dark matter core perfectly explains, for example, the orbits of the S stars that orbit the galactic center. But this unified model also fits precisely with the most recent data on the galaxy’s outer rotation curve provided by the Gaia DR3 mission. You have to look better. Although the mathematics add up and the model passes the statistical tests with flying colors, dethroning a supermassive black hole from the scientific imagination is not an easy task. And it is somewhat relevant, since the dark matter core lacks an event horizon, which is the absolute gravitational boundary of no return from which any element would be absorbed by the black hole. To know once and for all whether we are dealing with a black hole or a giant ball of dark matter, astronomers are aiming for the next generation of observations. We need to track what happens a little closer to the absolute center and future data of the GRAVITY interferometer (installed on the Very Large Telescope) will be key to detecting the subtle orbital deviations in the closest stars that would end the debate. Images | Dns Dgn BoliviaIntelligent In Xataka | We have a serious problem in our plans to colonize Mars: the astronauts’ blood is mutating

Europe has found a hole that has been sending sensitive material to Russia for years: a “Mercadona” from Germany

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More than 400 billion packages circulate around the world every year, and the international postal system is designed to move them as quickly as possible. To achieve this, many shipments cross borders with simplified controls and risk-based reviews, not full inspections. That logistical efficiency, designed to speed up commerce and everyday correspondence, sometimes generates unexpected cracks in much larger systems. An unexpected hole. Since the invasion of Ukraine in 2022, the European Union has lifted one of the sanctions regimes wider of its history with the aim of economically isolating Russia and hindering access to technology that can feed his military machine. Advanced electronics, sensitive components or certain industrial equipment are theoretically blocked to prevent them from reinforcing the Kremlin’s war economy. However, the practical application of these restrictions faces a constant problem: the more complex the sanctions system, the more ingenious They become the routes to avoid it. And in this case the weak point has appeared in a place so everyday that it is difficult to believe. A clandestine channel in the supermarket. The story was told in a report in Politico. Apparently, in several Russian chain supermarkets throughout Germany, among shelves of sweets or freezers, advertisements have appeared that promote a logistics service specialized in sending packages from Germany directly to Russia. What at first glance seems like a postal service for the Russian diaspora has become an unexpected crack within the European sanctions system. Customers may drop off boxes that supposedly contain clothing, books or small personal items. No one inspects the contents and, for a few euros per kilo, the package begins a journey that ends in Moscow or St. Petersburg. In this apparently innocent flow, even sensitive electronic components whose export is prohibited. The inherited logistics network. The middle counted that behind this circuit is LS Logistics Solution GmbH, a German company created by former employees by RusPostthe subsidiary that the Russian state postal service had established in Germany before sanctions forced it to close. After the invasion of Ukraine, that structure did not completely disappear. It was reorganized under a new namekept part of its staff and continued to operate from Germany with a similar system. The result is a kind of parallel postal network that collects packages throughout Europe and concentrates them in a warehouse near the Berlin airport, from where shipments to Russia are organized. The seal trick. The key to the system is an apparently bureaucratic detail. The packages do not have labels from the Russian Post, but from the state postal service of uzbekistan. Since that country is not subject to European sanctions, the shipment can take advantage of special rules that protect international postal traffic. In practice, this means that packets move with lighter controls than traditional commercial shipments. This administrative difference, designed to facilitate mail between citizens, becomes a back door for sensitive goods to cross borders without raising too many suspicions. A kilometer trip through Europe. The route of the packages illustrates chow it works the system. After being picked up from supermarkets or delivery points, they spend a day or two in Germany before moving to a large logistics warehouse near Berlin airport. From there they are loaded onto trucks that cross Poland on the A2 highway and continue to Belarus. Even though this country is also sanctioned for its support to Moscow, the packages continue to advance thanks to your status international postal mail. After traveling more than 2,000 km, they end up arriving at addresses in Moscow or Saint Petersburg. The problem of sanctions. Plus: the episode also reflects a challenge that those who design economic sanctions are well aware of. Officially blocking trade is relatively simple, but preventing alternative routes appear It is much more complicated, and that is already we have told it in the drone war in Ukraine. Each new restriction forces the creation of more complex control systems, while those who try to circumvent them constantly search new legal cracks or logistics. The result is an endless game of adaptation in which authorities try to close holes just as new ones begin to appear. Always one step behind. They finished the report explaining that European authorities are already reviewing the case and have strengthened the rules to pursue sanctions violations. Be that as it may, the discovery of the network itself demonstrates to what extent the system can make fun. As governments design increasingly strict legal frameworks, makeshift logistics networks continue to find ways to move sensitive goods across of unexpected routes. And in this case, the blind spot that allowed this channel to Russia to be kept open was not in an industrial port or a large cargo terminal, but in something as everyday as the check-in counter. a supermarket. Image | flowcomm, RawPixel In Xataka | In 2022, the war in Ukraine sent supermarket prices soaring. Iran threatens to make it child’s play In Xataka | The EU has a perfect plan to suffocate Russia. The problem is that now it needs its oil to survive

Saudi Arabia’s ace in the hole to break the Iranian blockade in Hormuz

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Iran’s survival strategy in this war is based on a tactic of geopolitical suffocation: strangling the Strait of Hormuz to impose an unbearable economic cost on the West. However, while the financial market blindly speculates with express truces and the price of fuel follows its own dynamics at the pumps, the physical reality on the ground is about to change. Saudi Arabia and the United Arab Emirates have a logistical “antidote” capable of rescuing up to 7 million of those barrels, radically changing the equation and breaking Iranian blackmail. The “antidote” in the desert. This lifeline was not improvised yesterday. Known as the East-West Pipeline (or Petroline), It began to be built in the 80s for fear that the war between Iran and Iraq will paralyze the Persian Gulf. According to Middle East Eye, It is a pharaonic artery of some 1,200 kilometers that winds through the Arabian desert, connecting the gigantic extraction fields in the east directly with the port terminal of Yanbu, bathed by the waters of the Red Sea. In this way, the crude oil can go out into the world without coming into the range of the Iranian missiles in Hormuz. As confirmed by the CEO of Saudi Aramco, Amin Nasser, in Financial Timesthe company is working around the clock to raise pumping to the pipeline’s maximum capacity: 7 million barrels per day. Before the crisis, only 2.8 million barrels circulated there. Nasser detailed that about 2 million barrels will remain to feed its refineries on the west coast, leaving the not inconsiderable figure of 5 million barrels per day ready for the global market. The machinery in motion. Saudi Arabia has stepped on the accelerator. “We should reach maximum capacity in a couple of days,” said the head of Aramco, according to statements collected by Reuters. If Riyadh manages to consolidate this route, the kingdom will be able to export close to 70% of its usual shipments. The energy analyst Javier Blas underlines in your column for Bloomberg that right now the critical thing is to look at the flow export outside of Hormuz, and not so much in wellhead production. And shipping data supports this frenetic activity: Bloomberg has detailed as an “armada” of at least 25 supertankers (known as VLCCs) have changed course and are sailing towards the port of Yanbu to load this lifesaving crude oil. Adding to this ball of oxygen is the effort of the United Arab Emirates. Through their Habshan-Fujairah pipeline, which also bypasses the dangerous strait to exit the Gulf of Oman, they are providing between 1.5 and 2 million additional barrels per day, according to the data of Wall Street Journal. The small print. However, as with any large-scale emergency logistics operation, there is no magic wand. Experts warn of several blind spots in this strategy: The port funnel: According to the agency Argus MediaAlthough the Saudi pipeline manages to transport 5 million barrels for export, the port of Yanbu has its own limits. Its nominal loading capacity is about 4.5 million barrels per day in two terminals, but market sources place the proven effective capacity closer to 4 million. The fuel crisis (distillates): As Arne Lohmann Rasmussen warns, analyst cited by Middle East Eyethe current problem goes beyond crude oil; It is a diesel and aviation fuel crisis. The pipeline East-West It transports crude oil, not refined products. This leaves markets such as Europe, which were highly dependent on Middle Eastern refineries (such as the gigantic Emirati Ruwais plant, recently hit by a drone). The Houthi threat and the collapse of the tanks: Moving the oil outlet to the Red Sea returns the spotlight to the Houthi rebels in Yemen. As Greg Priddy points outships loading in Yanbu bound for Asia will have to pass through the Bab el-Mandeb Strait, exposing themselves to drone attacks. Added to this is that, faced with the inability to remove ships through Hormuz, the Gulf countries are filling their storage reserves to the limit, forcing Saudi Arabia, the Emirates, Kuwait and Iraq to drastically cut extraction from their wells, as it has progressed Bloomberg. Buying time in the “Battle of the pipelines”. Nobody in the oil industry deceives anyone. Aramco’s own CEO admitted the “catastrophic consequences” What would a prolongation of this scenario have for the world economy? As Blas concludesthese alternative pipelines do not replace the opening of the Strait of Hormuz permanently. Its main mission is another: to buy valuable time. If the Saudi-Emirati duo manages to get this enormous pipeline to spit millions of barrels into the Red Sea and the Gulf of Oman, they will stop the panic at the Western pumps and take away Iran’s main negotiating asset. Far from the political and stock market noise, the resolution of this crisis is being fought in the logistical desert. Image | Aramco Xataka | Light and gas have become luxury items. Europe’s plan is to intervene in prices no matter what the cost

Delays and cancellations are putting a hole in Renfe’s accounts. So he’s going to start his own bus company.

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Renfe Viajeros… by bus. That has been one of the usual trends in recent months, with the company plagued by incidents that have prevented it from providing the service normally. The situation has been so complicated that, it is estimated, the impact of alternative services exceeds 10 million euros each year. The solution: create your own bus network. And Renfe is already looking for a partner. Looking for a partner. The information is brought The Countrywhere it is stated that Renfe is looking for a partner to start its own bus company. The idea would be very simple: Renfe would control 49% of the company and 51% would fall on the side of the collaborator. According to the newspaper, the proposal has already passed the board of directors of Renfe and Renfe Viajeros. Now, therefore, it remains to carry out the tender so that those companies that are interested in offering support to Renfe can sign up. The initial idea would be to have dozens of buses (between 50 and 100, according to the newspaper) to provide service in specific contexts. In Xataka We have contacted Renfe but when we wrote these lines we have not received a response. Because? Because Renfe is spending money on offering an alternative on wheels to its customers. When an incident interrupts the service, Renfe has to have a alternative road transport system. Right now, he has to pay an outside company, renting the buses and related expenses, such as staff. Having its own fleet would entail an expense of around 60 million euros, according to the initial accounts that have been raised. However, the newspaper points out that there are savings of between 90 and 130 million after a decade. That is, each year on average you would be saving about 10 million euros or a slightly higher figure. From the media they collect that the model used will be that of “negotiated procedure with advertising”. This means that Renfe will receive proposals but will be able to negotiate the conditions with the companies that have a more solvent offer. It is an exceptional procedure in the public procurement system. Exceptional situation. The premise, therefore, is to have a fixed fleet of buses and drivers, without having to subcontract and pay others to perform exceptional road services. Until now, the company has to search the market for drivers and buses that are available when a line is cut due to an unforeseen event. In recent years, the problem has been especially serious for the company. The DANA of Valenciathe fires in Galicia and León and the recent cutting of the southern corridor as consequence of the Adamuz accident in Córdoba has forced Renfe to maintain active service with buses for weeks. What does Renfe expect? Attract companies that have been seeing their business contract. And since The Country They point out that Renfe believes that there is more than enough business to keep the contracted buses active for at least 10 years. In fact, the contract would be for a decade, extendable to another five years, and they say that demand peaks could multiply current ones by nine. The movement could be interesting for bus companies because, right now, There are route tenders that are half dead and in which work is done with very low demand. Some of these companies would find a new outlet for their vehicles with each Renfe breakdown or incident in the infrastructure. In addition, it must be taken into account that the impact on the accounts may be greater when the incident (such as those described above) is not scheduled because forces Renfe to enter a market with few drivers and with companies that know the urgency of the company. Forced. It must be taken into account that a good part of Renfe’s business continues to be public. Therefore, you have the obligation to provide an alternative service when incidents occur on high speed but also if, for example, there are incidents on Cercanías or Rodalies. Any improvement in facilities that requires the interruption of rail traffic is replaced with buses. Photo | Pablo Nieto Abad and Fabio Romano In Xataka | Spain thought that Spain could manufacture the perfect trains for Spain. The reality: Spain is already looking for trains in Germany

2026 promised to be the great year for US tourism. Now it has found itself with a hole of 11 million visitors

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2026 looked good for US tourism. with the sector recovering of the pandemic on an international scale, the US started the year with three ‘hooks’ capable of attracting thousands of visitors: the world cup of FIFA, the centenary of Route 66 and the 250th anniversary of the Declaration of Independence. Three milestones that under normal conditions would make agencies, airlines and hotels rub their hands. Instead of that voices sound that warn that curves are coming. There are those who warn that the American industry risks losing a fortune and it is even done a question: Are there millions of tourists missing in the country? What has happened? That in a year in which (theoretically) the United States has everything in its favor to reinforce its tourism, in the country voices arise that speak of the complete opposite: loss of tourists foreigners and dark clouds on the horizon that threaten to cost the sector billions and billions of dollars. a few days ago The New York Times public an analysis in which he already slipped several worrying data: in January the flow of foreign travelers fell 4.8%a percentage that is largely explained by the decline in Canadian tourism, 28% lower to that of 2024. It is not only that the data is bad, it is that it maintains the negative trend of 2025, the year in which the US suffered a 6% decline in foreign visitors while the industry grew globally. How does 2026 look? That same question Oxford Economics did it not long ago, especially because according to its records in 2025, international overnight stays were reduced by 5.7% in the US. His answer is interesting: the observatory estimates that in 2026 the influx of foreigners will increase by 3.9%, although this growth is accompanied by some fine print. Getting started Oxford Economics remember that the celebration of the FIA ​​World Cup, which the US hosts jointly with Mexico and Canada, should be enough to boost the arrival of tourists. However, the 3.9% forecast for the US is much lower than the increase in demand expected worldwide, which is around 8%. Its analysts already warn that the US risks “underperforming other international markets again this year.” Is there more data? Yeah. TNYT appointment some analyzes and sources that point to stagnation or even a drop in demand from Europe. The most revealing is a study by Cirium that reflects a year-on-year drop of 14.2% in July reservations made from the old continent. The data must be handled with caution in any case. First because 2026 has just begun. Second, because the analysis is based on external sources and travel agendas, which does not include reservations processed directly with airlines. Can the panorama change? Yes. A month ago World Travel & Tourism Council (WTTC) launched a resounding statement in which he warned of the impact they would have the new demands posed by Washington for travelers who want to use the Electronic System for Travel Authorization (ESTA), including a in depth review of the applicant’s history on social networks. If the measure is finally applied, the organization warns, the sector could suffer a drop in demand with serious consequences. “34% of respondents say they are less likely to visit the US in the next two or three years if the changes are implemented. Only 12% say they would be more likely, which will translate into a significant net decrease in travel intentions,” explains. WTTC estimates point to a loss of 4.7 million international arrivals and $15.7 billion in visitor spending. In terms of employment, some 157,000 positions would be damaged. Are there more factors at play? Yes. The changes to the ESTA would explain the losses calculated by the WTTC for the future, but they do not the ‘prick’ that foreign tourism in the US already suffered in 2025, a year in which the sector grew in most destinations. In fact, the UN itself has highlighted the “weak results” of the US, especially during the third and fourth quarters. What is the reason for this trend? For the WTTC the answer seems clear: in 2025, with Trump in the White House, I already warned that “while other countries welcome (the traveler) the US Government hangs the ‘closed’ sign.” How is the sector doing? It is not the only warning he issues. The WTTC recently recalled that the US inbound tourism market has suffered the loss of 11 million visitors in just four years, between 2019 and 2025. The organization does not go into details or delve into the data. The one who does it is the UN, although for the whole of North America. According to your statisticsIn 2019, the region received 146.6 million foreign visitors. In 2025 there were 135.4. That period has coincided with the pandemic and its subsequent hangover, but in recent months it has been marked by international politics led by Trump, with threats of one kind or another to the EU, Mexico and above all Canada and Greenlandterritories that the Republican wants to annex to the United States. Why is it a problem? “When eleven million international visitors fail to show up, the result is billions of dollars in economic losses for the travel industry,” warns in The New York Times Erik Hansen, director of the United States Travel Association. As the New York media recalls, the Trump administration has not made it easy for travelers, restricting entry from a dozen countries and announcing measures that would make visas more expensive and would force tourists to undergo deep scrutiny to enter the country. With that backdrop, there are those who already has called for a boycott trips to the US, even during the world cupamong other reasons for protest due to the actions of ICE. Images | ANDilis Garvey (Unsplash), Gianandrea Villa (Unsplash) In Xataka | If you want to visit New York, go to the consulate first: the US has added a requirement for visas for Mexican children and elderly

Mining Bitcoin has always been an energetic black hole. Someone wants to turn it into your home heating

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The CES 2026 that has just closed its doors has confirmed an inescapable reality: Artificial Intelligence is everywhere, even where it seems to make no sense. From electronic LEGO bricks and wearables with roll-up screens, to more questionable devices like AI hair clippers that adjust the cut dynamically or digital frames that generate art by voice using GPT Image 1.5. Among this tide of “AI even in the soup”, a proposal has emerged that breaks with that trend and has surprised by its pragmatism: is it possible to get hot by mining Bitcoins? The answer is a resounding yes, and this year technology has shown that what was once a nuisance thermal waste is now a valuable household resource. ANDl income generating water heater. The American startup Superheat captured everyone’s attention with the presentation of its Superheat H1a water heater that uses ASIC (application specific integrated circuits) chips to heat a 190-liter tank while processing Bitcoin transactions. Unlike traditional electric water heaters, the H1 has an approximate price of $2,000, placing it 30-40% above the conventional market. However, as detailed in CNETwill be able to generate about $1,000 annually in passive income, always depending on the value of Bitcoin and the difficulty of the network. The science of “thermal reuse”. To understand this phenomenon, you have to turn to basic physics. The mining process requires intensive computational calculations (proof-of-work) that generate a massive amount of heat. Traditionally, this heat was expelled into the air using fans, but companies like Superheat have turned it around: mining is now the primary function and hot water is the secondary benefit. From the user’s point of view, the experience is seamless. The manual for devices like the Heatbit Trio reveals a control system sophisticated where the user can navigate the panel like a professional: Eco Mode: Heats exclusively by mining, limiting consumption to 400W. Target Mode: Combines the mining plate with a conventional heating element to maintain the desired temperature. Air purification: These devices not only heat, but act as purifiers with HEPA filters and air quality sensors (PM 2.5). Europe at the forefront. In the old continent, the proposal focuses on design and structural integration. From Austria, the company 21energy presents the Ofen 2a minimalist design radiator made of steel and aluminum. Unlike industrial miners that emit 75 decibels, this model is around 32-35 dB, being almost inaudible to the human ear. Furthermore, with a consumption of 1000 watts, it generates up to 40 TH/s of mining power, allowing users to recover part of their electricity bill while heating rooms of up to 50 m². On the other hand, in Switzerland, the company RY3T has marked a historic milestone. The RY3T ONE system has already been installed as the main heat source in a single-family house in the canton of Sankt Gallen. According to the companythis system can be more environmentally friendly than a conventional heat pump, as it reuses a computing power necessary for the global financial network instead of requiring additional electricity exclusively to generate thermal friction. A good idea or a technological chimera? Despite the enthusiasm, a report from Interesting Engineering raises critical questions that the consumer should consider: Obsolescence: What happens when mining hardware becomes obsolete? Will the entire heater or radiator have to be replaced? Network Cost: Even though heat is “free,” electricity for Bitcoin mining is often more expensive than natural gas in many countries. Regulation: If a country decided to ban Bitcoin mining, the user’s heating system could be legally compromised. From mining coins to processing Artificial Intelligence. As this report began, AI is the main protagonist of the moment, and its evolution will continue to be talked about far beyond cryptocurrencies. Julie Xu, COO of Superheat, explained at CES that the ultimate goal is to use this network of appliances for cloud solutions and AI inference. Instead of building gigantic data centers that stress the power grid and require massive cooling, homes could house small distributed computing units. However, this future poses a new dilemma: privacy. Experts from iFixit and Consumer Reports They already warn at this CES that “you don’t want a camera in front of your refrigerator watching you all the time” or a constant internet connection on simple devices, since it makes them more expensive to repair and prone to failure. The challenge will, therefore, be to balance the profitability of heating the home with the security of our private data. Image | freepik and heatbit Xataka | The bitcoin business cools down, but some miners have found a new vein: AI fever

The creative death of Marvel’s MCU left a huge hole. One that in my case is filling WWE on Netflix

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Twice a week I like to live a cathartic experience, and it is something that I strictly adhere to since the beginning of 2025. WWE and Netflix they started a million-dollar collaboration (a decade at a rate of 500 million dollars a year) so that their star shows could be seen around the world. Gone are those weekend mornings in Four with La Bomba Batista, Rey Mysterio or Randy Orton who starred in the childhood of an entire generation, but thanks to the platform of streaming, nostalgia hits harder than ever by allowing us to experience nothing less than the farewell tour of the greatest of all time: John Cena. But beyond the trip to childhood, my religious weekly ‘Raw’ and ‘Smackdown’ have helped me realize that with a ring and a handful of wrestlers they are scratching the same part of the brain as I expected the MCU to activate during these last years. The interrelation of the character arcsinvincible enemies, unexpected turns of a hero and alliances on the horn is something that Marvel has lost since ‘Avengers Endgame’ and that I find almost every week in wrestling. All that is needed is a suspension of credulity that is generated by the cathartic nature of the slaps (choreographed, not fake) and by how dedicated the public is to an event that also has the added bonus of being held live. Perhaps it sounds ridiculous for those who have not known about this world for 20 years, or for those who have barely entered it, but once you are part of the wheel, it is difficult not to get hooked by multiple aspects: combats measured to the millimeter with a physical preparation from another planet, soap opera stories between the stars where the distance between reality and fiction is separated by a bad fall or a word out of the script, or demonstrations of aura with entrances like those of Penta either Roman Reigns. But everything has its dark side and, as often happens, being a woman places me (even more frequently) in a dilemma. 7 TRICKS to get the MOST out of NETFLIX Triple H is not spared either The eternal “separating work and author” that does not prevent the bitter taste in the mouth produced by wanting to see the new Woody Allen or Roman Polanski movie or refusing to continue reading to JK Rowling. And the WWE is an almost inexhaustible source of controversies that makes it very difficult to draw the line and be able to simply enjoy a high-quality show and wrestlers who give their all in vibrant fights. The WWE has suffered under the previous management of Vince McMahon and their continuous scandalsbut with the arrival in 2022 of Paul Levesque (known as Triple H for wrestling lovers, and also McMahon’s son-in-law) as the new content director, they wanted to sell a new post-Vince era, establishing a gender equality policy on the roster and moving away from wrestlers with whom racial stereotypes were promoted. Since the replacement took place, there is no doubt that the female presence has increased in WWE, and continues to do so year after year; In its annual report we can see that of its superstars a 40% are womenin front of the 35% from previous year. And not only does it increase in number, but in quality; offering us stories and combats that are often infinitely superior to those perpetrated by male stars on the roster. Names like Rhea Ripley either Becky Lynch They are the female reference and those who lead the way for new recruits. The combination of global streaming thanks to Netflix and the growing number of female talentshas been the key factor that has managed to boost the increase of this audience. And, already in the documentary ‘WWE: Unreal’, the creative director that high percentage stood out: “WWE women have become an integral part of what we do. 40% of our audience is female. So, when you start down the road to ‘WrestleMania,’ you try to approach it with them the same way you do with the guys, you approach the narrative in the same way. “However, at the same time, this reality is continually clouded by putting its stars against the ropes beyond the ring itself. And the figure of Triple H is not exempt from controversy either. It is not only that he has visited the oval office alongside Trump this summer to join the Presidential Council on Sports, Fitness and Nutrition, reminding us once again of the US president’s relationship with the world of WWE and, inevitably, being a reminder of what political side the company joins. Not in vain, when the worst of the pandemic forced bodies to pile up in refrigerated trucks, even in New York, the WWE was one of the first sports practices to resume thanks to an exemption from Republican Florida. But the bulk of the excesses during his mandate are directed at the female public. Wrestlers and female audience against the ropes The WWE, through a agreement with Saudi Arabia which began in 2018 with the celebration of one of its events in the Middle Eastern country, was added to the list of sports that participate in the sportswashing strategic to whiten the image of the regime. This agreement, reprehensible for all that it implies on a political and social level, becomes even more flagrant and uncomfortable if we highlight what it means directly for the women of the company. In those first three events since 2018, the participation of the women’s section was totally prohibitedneither could they compete nor, of course, were female audiences allowed. It seems that, therefore, with that agreement of 100 million dollars annually Triple H easily forgets about that high percentage of female spectators that he brags about. It was not until 2019 when the Saudi authorities, in a display of modernity, allowed female wrestlers to compete, as long as they wore wrestling clothing that completely covered their bodies. … Read more

a supermassive black hole ejected from its galaxy at 3.4 million km/h

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Until now, we thought about supermassive black holes like the immovable anchors of galaxies, being gravitational giants that keep everything in order from the center. But we were quite wrong, since the James Webb Space Telescope us has confirmed that, sometimes, these anchors break and are shot through intergalactic space as if they were real gun bullets. The study. A team led by astronomer Pieter van Dokkum of Yale University has presented the first observational confirmation of a wandering supermassive black hole. It is called RBH-1 and its existence is the result of one of the most violent events that physics allows: being “kicked” out of your home by gravitational waves. A scar. Detecting this is not easy, since black holes They cannot be seen with the naked eye, but the destruction they leave in their wake is analyzed. This is precisely what JWST saw when it detected a massive linear structure about 200,000 light years long (twice the diameter of the Milky Way), which connects a distant galaxy with a bright, fuzzy spot. After trying to analyze this destruction in more detail, the telescope itself has revealed that it is a discontinuity. In layman’s terms: there is something extremely massive moving at an absurd speed of 954 km/s, which is equivalent to 3.4 million kilometers per hour. A speed that would allow us to travel from the Earth to the Moon in less than seven minutes. How do we know? The question in this case seems obligatory: How do we know that it is a black hole and not a simple star formation? The answer lies in everything it leaves in its wake, since by moving at this type of high speed, the black hole It compresses the gas so violently that it generates a trail of hot plasma that can be measured, as well as the formation of new stars. And now science has been able to confirm that this gas is not heated by the light emitted by stars, but by the brutal collision of a target that has at least 10 million times the mass of the Sun. Why is he running away? The theory behind this phenomenon is not new, but has been predicted by general relativity for 50 years. But in order to understand what has happened here, we can see it in three different steps: The first thing that happened was the merger of two galaxies and their respective supermassive black holes that began to orbit each other. After this, a third galaxy arrives to join this party and its black hole interacts with the binary system formed before. Finally, a cosmic “kick” is given. In this case, the interaction of three bodies generates a great asymmetry in the gravitational waves that results in a black hole shooting out of the galaxy at a high speed. It’s not the first. We already knew about wandering “stellar mass” black holes (a few times the mass of the Sun) roaming our own Milky Way, detected by gravitational microlensing effects by Hubble or the Gaia mission. However, finding a supermassive, what is the type of object that usually lives in the heart of galaxies, is a milestone on a different scale. Why this matters. The confirmation of RBH-1 is not a simple curiosity for physicists, but validates models of galactic evolution that suggest that the universe is full of these ‘exiles’. And this shows that if supermassive black holes can be ejected so easily, it means that many galaxies could be “orphaned” of their central core, affecting how they grow and form stars. Images | NASA Hubble Space Telescope In Xataka | China is launching more rockets into space than ever before. And the reason is very simple: not to depend on Starlink

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