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The Milky Way has been in the sky for billions of years. It took a natural disaster for the residents of Los Angeles to see it for the first time

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January 17, 1994. The San Fernando Valley trembled under a large earthquake of magnitude 6.7 that shook the city of Los Angeles with terrible severity. As is normal after a disaster like thisthe emergency lines were soon filled with calls from terrified neighbors. There were many common warnings, but there was a much more curious call which was repeated ad nauseam. That of a lot of neighbors scared by the enormous silver strip that had opened in the sky. What they saw, far from being something dangerous, was a clear sign of the light pollution that already covered Los Angeles 30 years ago. It was just the Milky Way. In reality, what these neighbors saw was neither more nor less than the Milky Way. Many of them were not used to traveling outside big cities, so they had not seen our galaxy crossing the sky in their entire lives. This is precisely why this true story is often used to raise awareness about the risks of light pollution. Why is it not seen? Artificial light from streetlights, monuments or illuminated shop windows is reflected and dispersed in the atmosphere, so that it illuminates the background of the sky. Normally, we see stars because there is a great contrast between them and the dark sky. However, this scattered light almost completely destroys said contrast. From Earth, the Milky Way appears as a very faint band of light. Therefore, if there is not enough contrast it is practically impossible to see it. It’s still there, but it’s hidden from our eyes. The more pollution, the worse. The suspension of particles in the air can cause artificial light to scatter even further. Therefore, the problem in large cities, like Los Angeles, is twofold. On the one hand there are many streetlights and other luminaires and on the other hand there is usually a lot of pollution. It is normal that so many people have never seen the Milky Way. Getting worse. This event took place more than 30 years ago. Although today there is more awareness about the problem of light pollution and the City Councils of some cities design lighting projects advised by astronomers and other experts, the situation has not improved. In fact, currently is calculated that 80% of the world’s population lives under light-polluted skies. Using the striking case of the Milky Way as a reference, a study published in 2024 point because 60% of Europeans and 80% of Americans have never seen the Milky Way. The case of people who believed that the sky had cracked is just an anecdote. However, the reality is that the heavens are no longer what they were. If the problem of light pollution is not solved, future generations will not be able to enjoy many of the spectacles that the sky has given us. Image | Magnificent In Xataka | James Webb has found a galaxy from when the universe was 330 million years old. Hides a whole enigma

A mathematical problem had been resisting experts for more than 80 years. An AI has surpassed them all

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In 1946 the Hungarian mathematician Paul Erdős asked a seemingly very simple question: if you place n points in the plane, how many pairs of points can be exactly at a distance 1 from each other? This dilemma is known as unit distance problem in the planeand has maintained many mathematicians who research in the field of geometry, immersed in its resolution for no less than eighty years. The classic strategy proposed by many of them to try to solve it was to resort to a square grid. They soon realized that the number of pairs at unit distance grows at least as n to the power of (1 + C/loglog(n)), where C is a positive constant that quantifies how much a particular construction can be better than a basic square grid. It’s a complicated idea, it’s true, but we can try to approach it in a slightly more intuitive way. A standard square grid produces approximately 2n pairs of points at unit distance. If we rescale it in an ingenious way by choosing the scale factor as a number that has many divisors (in number theory this property is known as a number with many small prime factors), you get more pairs of points to fall exactly at distance 1. The value of C measures precisely the efficiency of that choice. This is the key. An AI from OpenAI has achieved the first major breakthrough in 80 years As we are seeing, the question Erdős asked is very easy to state, but extraordinarily difficult to resolve. If we develop the classical approach a little further we will realize that since loglog(n) grows very slowly, the exponent approaches 0. This means that the square grid grows only slightly faster than n, but not enough to exceed n at a fixed rate. This milestone was achieved by a general-purpose inference model that OpenAI was testing internally. This is why for decades mathematicians predicted that the upper bound would be approximately n^(1+o(1)), that is, just slightly larger than n. Now we know that they were wrong, and the person who refuted this conjecture was not a particularly skilled current mathematician; this milestone has pointed it out a general purpose inference model which OpenAI was testing internally. and not one artificial intelligence (AI) specialized in mathematics. This model has provided an infinite family of examples that produce polynomial improvement. In fact, he has shown that it is possible to construct configurations of points with at least n^(1+δ) pairs at unit distance, where δ is a fixed value greater than 0 that does not disappear as n grows. When the AI ​​delivered this result, OpenAI researchers asked a group of Princeton mathematicians to review it. And his conclusion was blunt. The AI ​​was right. This is the first progress on the lower bound of the problem posed by Erdős in 80 years. And, curiously, the OpenAI model has achieved this by using advanced engineering tools. algebraic number theory for an apparently elementary geometry problem. Several renowned mathematicians, such as Fields Medal winner Tim Gowers or number theory expert Arul Shankar, have declared that the result that AI has delivered is an extraordinary achievement that could provide mathematicians with a bridge to explore other problems in the future. Image | Jeswin Thomas More information | OpenAI In Xataka | These two problems have baffled mathematicians for decades. A genius has solved them with a stroke of the pen

Antena 3 has been broadcasting the Rosco from ‘Pasapalabra’ for 26 years as if it were theirs. And justice has just put an end to it

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Is the most watched program on Spanish television. And he faces a considerable problem. It is a topic that affects not its mechanics, but its most iconic and recognizable moment: those final minutes in which two contestants review the alphabet against the clock. The Supreme Court has ratified that this circle of letters was never owned by Antena 3, and in fact, its true owners have been waiting for decades for the courts to agree with them. The time has come. The sentence. The Civil Chamber of the Supreme Court issued its resolution on April 30 and made it public on May 21, 2026. The ruling confirms the ruling of the Provincial Court of Barcelona and dismisses the appeals of Atresmedia and ITV Studios, producer of the program, concluding that El Rosco is a work protected by intellectual property whose ownership corresponds to the Dutch company MC&F Broadcasting Production and Distribution CV The sentence requires the cessation of broadcast of Rosco and a compensation of 50,000 euros for moral damages. Delete ‘Pasapalabra’. In fact, there are a detail in the sentence which is more impressive on practical levels for the average viewer than the fine itself: the sentence imposes the destruction of all recordings of programs that include El Rosco. Although this “destruction” comes from article 139 of the Spanish Intellectual Property Law, whose purpose is to remove copies from commercial exploitation (DVDs, platform licenses, sales to third parties), it does not necessarily refer to the chain’s internal archive, that is, ‘Pasapalabra’ is not going to become lost media. In practice, however, you cannot license, sell or distribute the program in streaming. If Antena 3 had, for example, episodes available on Atresplayer, they would have to be removed. The defense of Atresmedia. According to Atresmedia, El Rosco was a generic idea (questions ordered by the letters of the alphabet), and the ideas are not protectable by law. However, the Supreme Court, in reaching its decision, emphasizes that the test enjoys “sufficient originality” because it reflects free creative decisions of its authors, a “own uniqueness” that distinguishes it from other games based on the alphabet, and above all, it alludes to its visual configuration: the circular donut, the dynamic of passing and returning to unanswered questions and the final stopwatch. This idea was born in the Italian version of ‘Pasapalabra’, in 1999. As arrive El Rosco to Spain without rights. It is to that point in history that we must go back to understand the dispute. The game was created by two Italians, Reto Luigi Pianta and René Mauricio Loeb, as part of a program called ‘End Game 21×100’, which was later merged with the Italian version of ‘The Alphabet Game’, called ‘Passaparola’, at the end of that decade. The creators assigned their rights to the Dutch production company MC&F. Until then, no conflict. The problem came when ITV began licensing Pasapalabra to other European networks, including El Rosco in the package, as if it were part of the original format, something that MC&F has been calling illegal for decades. That is to say, Antena 3 has broadcast for 26 years a format that included a piece that was not its own, nor the person who sold it to it. When Telecinco also lost ‘Pasapalabra’. It is not the first time that the Supreme Court has reorganized the Spanish television map on account of this program. In 2019, the Supreme Court forced Telecinco to stop broadcasting ‘Pasapalabra’ following the lawsuit brought by ITV in 2010 over the rights to the full format. Following its victory in court, ITV assigned the rights to Atresmedia, and Antena 3 resumed broadcasting on May 13, 2020. Since then the program has not stopped growing. The importance of ‘Pasapalabra’. The contest is the cornerstone on which all of Antena 3’s late-night programming is based, currently the most viewed chain of Spanish television. In the 2024/2025 season, ‘Pasapalabra’ reached an average share of 18.3% of sharewith a maximum of 21.1% in June 2025, consolidating itself for the sixth consecutive year as the most watched daily program on Spanish television. And from there people do not turn away from television: El Rosco is the anchor that drags viewers towards the nightly news and towards the prime time of ‘The Anthill‘. What is the future of ‘Pasapalabra’. The ruling does not eliminate ‘Pasapalabra’ from Antena 3. ITV’s contract with Atresmedia remains in force and the program can continue on the air. What it cannot do is include El Rosco. Program sources have confirmed that Atresmedia will maintain the broadcast “normally” until receiving official notification of the ruling and knowing the deadlines for the process. From there, the possible paths are to negotiate directly with MC&F to obtain a use license, design a new final test to replace the Rosco or wait for ITV to reach an agreement with MC&F. Problem: None of the three options are quick and all involve altering a program that, as it stands right now, is working like a charm. Mediaset’s trick. And here comes the twist: apparently Approximately a year ago, Mediaset closed an agreement with MC&F to acquire the rights to Rosco, conditional on the Supreme Court resolving the dispute in the terms that have finally become known. With the sentence now final, Mediaset can create a program around Rosco. But that program cannot be called ‘Pasapalabra’ nor have the mechanics of the Antena 3 program. In other words, if it is confirmed that Mediaset can use Rosco, the most famous program on television is now divided: its name and structure is from one network, its best-known test from another. In any case, we are going to see changes in the future, predictably in Access that Antena 3 now dominates. And whoever controls Access… controls the audiences. In Xataka | Four years of historic audience lows: Telecinco is looking for oxygen this summer and its idea is to recycle presenters and formats

We have been growing rice for 9,000 years under the same thermal rule. We’re about to break it forever

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The rice It is not just another cerealbut it is the fundamental pillar that supports the diet of more than half of the world’s population. For millennia, humanity has relied on its ability to thrive in different latitudes and feed entire civilizations, but now we are about to bring this ancient crop to to unknown territory due to the increase in temperatures we are experiencing. They are documenting it. Rice has a limit to the conditions it can withstand in order to thrive, and science has sounded the alarm by pointing out that the thermal tolerance of rice has remained practically constant for the last 9,000 years, but now, in a matter of decades, we are about to break this barrier. A thermal limit. The research work has focused mainly on cross-referencing archaeological data from millennia ago with contemporary records of cultivation and future climate projections. In this way, after tracing the evolution of rice cultivation over the millennia, researchers discovered that its historical limits have barely changed. This means that ancient civilizations planted rice under temperature conditions surprisingly similar to the maximum temperatures supported by the current varieties we use. This is why the bug, evolutionarily speaking, has not adapted to extreme heat that it had never experienced before. The increase in temperature. The study estimates that, towards the end of the century, the geographical area that will exceed thermal thresholds could multiply between 10 and 30 times in the main rice-growing countries of Asia. This means that the regions that are now the world’s rice granaries could become biologically hostile to the plant, not allowing it to grow. The first cracks. It is not necessary to go to the year 2100 to see the effects of this crisis, but thermal stress is already affecting rice fields. This is evidenced by a recent study that analyzed the practical cultivation of rice in China and showed that global warming is already altering the rules of the game. According to this workthe increase in temperatures is causing alterations in the life cycles and flowering of the plant, in addition to a worse use of the thermal resource in several of the most important rice-growing areas of the Asian giant. In other words: extreme heat is desynchronizing the rice’s biological clock, making the plant less efficient at growing and producing grain. Its consequences They do not focus only on withered plants, but also translate into a drastic drop in production globally. Already in 2017, published research warned of plausible rice yield losses under future climate warming, and now we are seeing that the hotter the heat, the less grain per ear. The social problem. Something to keep in mind is that, although the increase in atmospheric carbon dioxide can increase plant growth, the reality is that its effects are distributed tremendously unevenly. Here science warns that these climate alterations are increasing the achievement gap between low-income and middle- and high-income countries. This also means that, while the richest nations will be able to invest in new infrastructure, cooling systems for crops or genetically modified varieties to be more resistant, the nations most dependent on rice will suffer the onslaught of production losses without being able to do almost anything. Race against the clock. A priori, we cannot trust that the natural evolution of rice will save us, because if we look back, we will see that if the thermal limit of the crop has not changed in 9,000 years, it will not do so magically in the next five decades. This means that alternatives must now be considered to save the most basic food or even prepare for a restructuring of agricultural areas in Asia. In Xataka | Spanish rice is discovering that there is something worse than droughts and pests: rice from Myanmar and Cambodia

The number of tourists to Antarctica has skyrocketed 1,000% in 30 years. There are those who believe that the real boom has not yet arrived

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The hantavirus crisis has served so that, at least for a few days, much of the planet remembered COVID-19 and what was exposed that there is a hyperconnected world and a changing climate to the expansion of pandemics. Also (even if only glancingly) to remember a phenomenon that has been gaining strength for years in a silent, discreet, but forceful way: the tourist exploitation from Antarctica. The MV Hondius was promoted like a cruise to remote destinations departing from Ushuaiastarting point also of the vast majority of ships traveling to the southern pole. He interest in Antarctica by the MV Hondius shipping company (Oceanwide Expeditions) is no coincidence. There are more and more signs that suggest that polo is becoming an important tourist asset… and (above all) on the rise. A percentage: 1,120%. Antarctica may be one of the most remote places on the planet, but that has not left it off the radar of the tourism. On the contrary. For some time the data of IAATOthe International Association of Antarctic Tour Operators, show that the region has never been busier. The annual balances may register slight fluctuations, but the curve they draw when the focus is opened and the last three decades are analyzed shows the growing popularity of the destination. The latest evidence has been provided The Vanguard in an article in which he leaves out a key fact: during the 2024 season, more than 122,000 people visited the continent, which represents an increase of 1,120% compared to 30 years ago, when the statistics did not exceed 10,00 visits. Is there more data? Yes. To be more precise, the last balance from IAATO shows that if in the 1993-94 season the number of disembarked passengers barely reached 8,000, in 2013-14 it already exceeded 27,700 and in 2023-24 it was close to 78,900. In parallel, the number of those who only travel on cruise ships, without setting foot on land, has also been increasing. If in 2013-14 there were 9,700 people, last season they exceeded 43,200. Looking ahead to the 2024-2025 season the body calculates a slight decrease in the number of travelers who do not get off the boat and an increase in those who do. The first would remain at 36,769, the second at 80,434. Added to these are 938 “deep field” visitors, as those who fly to the interior of the region or board a ship to explore the Antarctic Peninsula or the islands are called. USA, the big market. IAATO statistics allow us to go further and analyze, for example, the nationalities of travelers who stop in Antarctica. The Americans are in the lead, with 44.6% in 2023-24, followed far by the Australians and Chinese, who each take almost 8% of the pie. The British, Canadians, Germans, Argentines and Brazilians also stand out, although IAATO has identified visitors of more than 200 nationalities. As for what they do there, the vast majority (98%) of tourist trips focus on the Antarctic Peninsula during the southern summer season and They depart from Ushuaiasouth of Argentina. Activities offered upon arrival include zodiac trips, landings and (more rarely) kayaking, climbing or overnight stays. IAATO graph with the flow of visitors between 1993 and 2002. IAATO graph with the flow of visitors between 2011 and 2024. Looking to the future. The flow of tourists may have skyrocketed in recent decades, but could fall short in the coming years. At least that’s what the researchers who have just published believe. a study on “Antarctic tourism management” in Journal of Sustainable Tourism. In it, the team led by Dr. Valeria Senigaglia slips two pieces of information. First, verify the boom of visitors in the last 30 years: from less than 8,000 in 93/34 to more than 120,000 in the 2023/24 season. Second, he warns that if the model is not rethought, the number of tourists could quadruple in the next decade until reaching almost half a million people annually. “If the number of visitors grows at the average annual growth rate recorded between the 1992-1993 season and the 2023-2024 season (a constant annual growth rate of 14.0%), the total number of visitors is expected to almost quadruple in 10 years, reaching approximately 452,000 in the 2033-2034 season,” specify the paperwhich also recalls that approximately 65% ​​of the more than 120,000 tourists who currently take cruises to Antarctica travel on ships that allow disembarkation, operations that tend to concentrate at the same points. An invisible footprint. That Antarctica arouses curiosity and there are people who want to know it or even visit it is, a priori, nothing bad. The problem, like warn the authors of the report, is the impact that this growing flow of tourists can have on a particularly fragile ecosystem. Although all the details are taken care of during the landings and IAATO demand tourists not to touch or feed local wildlife or damage plants, their presence poses certain environmental risks. For example, Elie Poulin, from the University of Chile, warns in The Vanguard that tourism can unintentionally spread exotic species. It comes with someone transporting them without knowing it. “Widespread degradation”. “The risks are real. An invasive species of grass has established itself on one of Antarctica’s South Shetland Islands, while bird flu has reached the Subantarctic Islands, where it has had a devastating effect on the seal population,” warned Dana Bergstrom has long been an expert in Antarctic ecology. This is without taking into account the environmental footprint left by cruise ship traffic or frequent disembarkation in certain areas. “A major concern is that the cumulative impacts of tourism will interact with alterations in weather patterns, snowmelt, ocean currents and nutrient cycling caused by climate change, leading to widespread habitat degradation and declines in wildlife populations and diversity,” insist Senigaglia. Review the guidelines? The reality is that visiting Antarctica is still not the same as traveling to any other tourist destination on the planet. Since 1991 there has been a protocol of environmental protection of Antarctica that … Read more

Giving seven times more vitamin D during pregnancy improves children’s memory at 10 years old. The problem is in the fine print

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During pregnancy, the recommendations of supplementation They are an area where science advances with lead feet, since the most important thing is always to guarantee safety. One of these supplements that is heard the most is vitamin Dtraditionally known for its role in calcium absorption and bone health, but which has been in the spotlight for years for its possible impact on neurodevelopment. A new study of Danish origin has put its objective on this statement to be able to clarify what happens when a mother supplements with vitamin D during pregnancy. Through its publication in JAMAtells how, to achieve good results, almost 500 children were analyzed for several years until finally being able to see if they had cognitive improvement during their childhood. What were they based on? To understand this discovery we have to go back in time to a randomized clinical trial titled as COPSAC2010whose initial results were published in 2016. This trial sought to evaluate whether vitamin D prevented the risk of suffering from asthma or persistent wheezing in babies, and to verify this the researchers divided the mothers into two groups from the 24th week of gestation: One group would receive the standard recommended dose of vitamin D of 400 IU per day. The other group had a “megadose” of vitamin D of 2,800 IU daily. The discovery. Taking advantage of this valuable group of 498 children, the research team decided to get more out of it, since when these children reached 10 years of age they were subjected to rigorous cognitive tests to see if the fact of having given vitamin D to their mother during pregnancy had left its mark on their brain. In this way, two objectives were covered with a single investigation. Here the results revealed that children in the high supplementation group showed a modest but significant improvement in verbal and visual memory compared to the children of mothers who took the standard dose of vitamin D. Although something important to note is that it puts to rest any idea that this supplementation is a machine to “create geniuses”, because there were no differences in IQ and they only saw that the ability to retain information was improved. The small print. Given such a finding, it is tempting to think that all pregnant women should multiply their vitamin D intake to give their children an advantage over others. But here we must pay attention to different problems, such as that the original trial was designed to measure respiratory problems and not neurological development. This means that drawing conclusions from here reduces the statistical robustness of the discovery. But this is not the only problem, since we have seen that the effect is “modest” without seeming to give children a great advantage. And furthermore, the study is based on women who already had normal vitamin D levels before the study, so it is not clear how this dose would act in populations that truly have some type of chronic deficiency of the vitamin. Will there be changes? At the moment, these studies do not justify the need to recommend that all pregnant women supplement their diet with vitamin D, as is the case with other supplements such as folic acid. The real value of this research is not to give us an immediate new prescription, but to open the door to future clinical trials specifically designed to unravel how what happens in the womb continues to shape our brains a decade later. Images | amylla battani In Xataka | We have been sending pregnant women to bed for decades as a precaution. Science has just proven that it is a big mistake

China finally has a competitive desktop processor. Its problem is that it is six years behind Intel

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China has your own alternative to processors for PCs, servers and data centers made by Intel, AMD and other companies. Loongson is one of the few Chinese companies that can manufacture advanced microprocessors. We have been following it for several years because in the current climate of geopolitical tension it has acquired more relevance than ever, and there is no doubt that its cruising speed is high. At the end of December 2022 this company launched its CPU 3A5000 32 corea general-purpose processor with LoongArch microarchitecture implemented by this company on the MIPS architecture. And in February 2024 it presented its LS3C6000 server processor, a CPU with DragonChain technology that could be scaled up to 64 cores. Its latest milestone is not the presentation of a new chip. The reason why we have decided to talk to you again about this Chinese company is that just a week ago it confirmed that it has distributed more than one million units of its flagship desktop processor, which represents a milestone in China’s efforts to build a self-sufficient semiconductor industry. The 3A6000 CPU has been designed and manufactured entirely in China Loongson implements its processors on the MIPS architecture, but the microarchitecture of these chips has been expressly designed by engineers at the Chinese Academy of Sciences. By not using x86-64 or ARM architectures, this company has been able to continue refining its designs without being conditioned by US sanctions. Be that as it may, Loongson is dedicated to the design of microprocessors, but does not have the capacity to manufacture them itself. China recently had no alternative to US-made CPUs SMIC takes care of this (Semiconductor Manufacturing International Corp), what is the largest semiconductor manufacturer from China, in the same way that TSMC produces the integrated circuits designed by AMD, Apple, NVIDIA or Qualcomm. According to the publication Fast Technology, the third generation of Loongson chipsto which the 3A6600, 3B6600 and 3C6600 CPUs belong, has a performance comparable to that of the 12th Intel Core and 13th generation. Curiously, according to Fast Technology, the 3B6600 model in particular is the one that rivals these Intel CPUs and comparable AMD proposals. In fact, according to SCMP Loongson herself has acknowledged that the performance of her desktop processors is comparable to that of Intel chips launched around 2020. Six years is a long time in this sector, but it is important that we do not overlook that China recently did not have any alternative to US-made CPUs. This achievement by Loongson is part of Beijing’s effort to channel resources to reduce China’s dependence on foreign semiconductor technology. However, this strategy has been accelerated in response to restrictive export controls Americans who limit China’s access to advanced chips, integrated circuit design software and next-generation semiconductor manufacturing services. It will be interesting to see if Loongson finally catches up with Intel and AMD. Image | TSMC More information | SCMP In Xataka | China takes off in quantum computers: it already has the first dual-core and 200 qubits on the planet ready

This Prime Video series ends after 7 years and 40 chapters, making history with an audience more divided than ever

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Today Prime Video premieres the last episode of ‘The Boys‘. It is not just any ending: it comes with the highest audience figures in the entire history of the series and, at the same time, with social networks converted into a battlefield over whether this latest installment of the superhero satire has been worth it. What is clear is that one of the most ambitious and rounded productions of the recent era of the streaming. ‘The Boys’ was born as an adaptation of the comic by Garth Ennis and Darick Robertson published between 2006 and 2012 and arrived on Prime Video in July 2019 with a brutal premise:what if superheroes were corporate tools with powers of mass destruction? The series created by Eric Kripke immediately connected with a eerily similar political and information climate to the starting point of the series. In the following seven years, the fiction has accumulated five seasons, a spin-off (‘Gen V’) and an expanding universe that turned Patriot, more than a villain, into a disturbing reflection of reality. For a series to reach its conclusion at the best audience moment in its history is not usual. ‘The Boys’ has done it. The fifth season has reached an average of 57 million viewers per episode on a global scale, the highest figure in the entire history of the series. The season is also among the ten most viewed from any Prime Video original series. All this while there has been a more heterogeneous public reception than ever with the series (often praised by critics, but with very combative detractors for its powerful political message). In addition, this season has encountered criticism of its pacing, filler episodes and lack of action. It has been compared to ‘Game of Thrones’ in its controversial final stretch and although Kripke has defended the decisions that have been made, today is the day to check to what extent the series manages to live up to its prestige. In Xataka | 8 premieres this week on Netflix, including a science fiction and mystery series from the creators of ‘Stranger Things’

Spain has broken records in youth employment. The bad news is that one in three unemployed people is already over 50 years old

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Unemployment in Spain has been chaining months of good news. In April, the number of unemployed fell to 2,357,044 people, falling below 2.4 million for the first time since June 2008. The story, seen from afar, is that of a labor market that has finally left its worst unemployment figures behind. However, that story has a blind spot. When the data is broken down by age, the initial optimism gives way to reality: the labor market is improving, yes, but not for everyone equally. The workers over 45 years they continue to fall behind, and the latest data of the State Public Employment Service (SEPE) confirm it. Senior unemployment is close to 60% of the total. Of the slightly less than 2.35 million unemployed counted in April 2026 in Spain, 1,376,550 unemployed were 45 years old. This represents 58.4% of all registered unemployment. In other words, six out of ten unemployed They are over 45 years old. The bad news doesn’t end there. Within this group of people over 45, one in three unemployed people is already over 50 years old. To put into perspective what that percentage implies, we must compare it with what happened in the same month among those under 25 years of age. Youth unemployment has improved its percentages with a drop of 10.2%, with 19,284 fewer young people on the SEPE lists. If we return to the data for those over 45 years of age, we find that only 19,990 people in this age group they found a job, but in this case the decrease has only meant a drop of 1.43%. That is, given the progressive aging of the active population in Spain, those over 45 years of age are the largest group, so although the number of people who have found employment are very similar, the weight as a whole is very different. Less unemployed, but more chronic unemployment. At the end of the first quarter of 2026, the segment of those over 55 years of age was close to 4.93 million employed people. This represents 22% of all workers in the country, with 242,500 more people than a year before. These are figures that reflect that, on the one hand, the active population is increasingly older and, on the other hand, he is retiring later and remains in the labor market for longer. The second bad news for those over 45 years of age is that those who lose their job at that age have enormous difficulties in recovering it. In March 2026, those under 25 years of age signed 308,094 contracts, compared to the 367,204 signed by the group over 45, which doubles the percentage of the active population in number. That leaves us with one conclusion: senior hiring is proportionally tiny. He Labor Market Report for People over 45 years of age 2026 prepared by the SEPE, indicates that this group will exceed 11 million employed during 2025, more than 50% of the total number of workers. Even so, this massive presence in existing employment does not translate into the same rate of access to new opportunities. This is an indicator that the barriers to the reintegration of those over 45 into the labor market continue to be insurmountable. once you lose your job. Proof of this is that 53% of the 755,500 unemployed people over 50 have been looking for a job for more than a year without finding it. Youth unemployment breaks its own record. The scenario for those under 25 years of age is diametrically opposite. unemployment among those under 25 years of age It closed April 2026 at 24.53% with a total of 169,693 people, the lowest figure in the entire SEPE historical series. In year-on-year terms, it represents a drop of 14.2% compared to April of last year, when there were 197,674 young people unemployed. A decade ago, in 2015, the youth unemployment rate in Spain stood at 44.4%. This sustained decline has no equivalent in any other age group, which makes youth employment one of the great successes of the Spanish labor market in recent years. In aging it is a determining factor. As the data show, age defines large differences in the impact of unemployment between the different segments of the active population, but this differentiation also means that unemployment punishes some communities more than others, with a special impact on emptied Spainwhere young people have moved to the large industrial hubs. By province, Zamora stands out strikingly because more than 62% of its unemployed are over 45 years old. Pontevedra and La Coruña also present very aging unemployment structures. In Xataka | There is a man who has been working for the same company for 85 years. And he has no plans to retire. Image | Unsplash (Hasan Mrad)

The Earth has had a traveling companion for millions of years and we don’t know where it came from, but there is a ship ready to give us answers

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The Earth does not travel alone around the sun. And not only because of the Moon, which logically always accompanies it, orbiting around it. It also has several traveling companions: objects, called co-orbitals, that take exactly the same time as our planet to make a complete revolution around the star. These objects are well known, but their origin is quite mysterious. There are astronomers who bet that they escaped from the asteroid belt. However, their silicate content suggests that they could be fragments of the Moon that jumped from its surface after the impact of a meteorite. Now, a team of scientists has assigned probabilities to each option, although for definitive proof of its origin we will have to wait a little longer. (469219) Kamo’oalewa. This is the name of one of the best-known coorbitals on Earth. It measures between 24 and 107 meters in diameter and the spectral analyzes that have been able to be carried out Telescopes such as the Large Binocular Telescope (LBT) and the Lowell Discovery Telescope (LDT) indicate that it is very rich in silicates, so it is likely that it comes from the Moon. In fact, the most accepted hypothesis so far indicates that it could have been formed during the impact that gave rise to the Giordano Bruno crater on our satellite. However, this new study, published in the journal Icarus, suggests that it is more likely that it is an asteroid escaped of the belt between Mars and Jupiter. Very unlikely. For an asteroid or a piece of the Moon to become co-orbital, they must not only escape from their place. Also They must have enough energy to be located in what is known as a quasi-satellite orbit. This, for a body the size of Kamo’oalewa, is highly unlikely. Quasi-what? A quasi-satellite has certain similarities with a satellite, but it is not the same. When we look at one of them from the planet it accompanies, in the direction of the Sun, it appears that it is in orbit around the planet, but in reality it rotates around the Sun itself. This, among other reasons, is due to the fact that is outside the Hill sphere of the planet. That is, the environment dominated by its gravity. Being outside of said orbit, it is influenced by the planet’s gravity, but above all, in this case, it is influenced by that of the Sun. Be that as it may, falling and staying in that orbit is complicated, as we have already seen and, above all, as these scientists have demonstrated. Win the asteroid option. These scientists have created models that simulate the trajectory of 12,000 synthetic particles launched from the lunar surface at different speeds and angles, following their orbits for millions of years. The goal was to see how many stabilized at co-orbital points with the Earth. In total they found 70 objects with a diameter greater than 10 meters capable of doing so. 70 out of 12,000! Now, when they repeated the procedure by swapping lunar particles for objects from the asteroid belt, they found more candidates. 1,600 in total. Tianwen-2 will return samples to answer the mystery in 2027 Tianwen-2 will have the key. The origin of coorbitals is so intriguing that China already has sent a ship to analyze the surface of one of them. Specifically from Kamo’oalewa himself. The Tianwen-2 mission left in May 2025 towards this object, with the aim of collecting at least 100 grams of samples and return them to Earth for analysis. It is already known that there are silicates, or at least it is suspected, but a deeper idea of ​​the composition is needed to understand the origin of this object. Orbit insertion is expected to occur next June if all goes well. Then he will spend a few months collecting samples to put them in a capsule, which will land back on Earth. already in 2027. Two options. If the analyzes of Tianwen-2 conclude that Kamo’oalewa came from the Moon, the lunar impact mechanics would have to be rethought, since it would be very rare for one of these fragments to have been able to reach its final location with what we know so far. On the other hand, if it is proven that it comes from an asteroid, it would be necessary to study where these silicates come from, since they are very unconventional for an object of these characteristics. Whatever is concluded, there will be a lot of fabric to cut, that is clear. ç Image | NASA |China News Service In Xataka | The Earth has moons that we don’t know about: exploring them is key to revealing the secrets of our solar system

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