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Alibaba has presented its largest AI model, with a billion parameters. The question is whether at this point that means something

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The Chinese giant Alibaba has announced a new language model, the largest they have announced to date. It is called Qwen-3-Max and presumes that it has more than 1 billion parameters. The biggest. It is the last model within the series Qwen3 which was launched in May of this year and, as its name ‘Max’ indicates, it is the largest to date. Its size is given by the parameters, 1 billion to be exact, while the previous models of its series reached a maximum of 235,000 million. According to South China Morning Post (Which owner Alibaba), his model stands out in understanding of language, reasoning and text generation. Benchmarks. The results of the benchmarks place QWen3-Max ahead of competitors such as Claude Opus 4, Deepseek v3.1 and Kimi K2. If Gemini 2.5 Pro or GPT-5 does not appear, it is because they are models of reasoning and have only compared rapid response models. As they point out in Dev.toboth Gemini 2.5 Pro and GPT-5 obtain higher scores in mathematics and code, so reasoning models continue to have advantage in those areas. Qwen3-max-preview can already be tested free of charge. Benchmarks shared by Alibaba. Parameters. The parameters are all the internal variables that a model learns during training. In other words, it is the knowledge that the model has obtained from the data with which it has trained and allows it to interpret our requests and generate their answers. In theory, the more parameters, the model will have more and better capabilities. It also implies that it needs more computational power both to train and to execute the model. More does not mean better. The speech of the parameters remembers that of the megapixels with the first cameras. A 100 megapixel sensor will take larger photos than a 10 sensor, but there are other crucial factors that affect image quality such as sensor size or lens luminosity. Quality data. More parameters can be translated into more learning capacity and more resolution of complex tasks, as long as quality training data has been used. It is obvious: a language model that has been trained with redundant, incorrect or biased data will learn and continue to reproduce those errors in their operation. There are more. In 2022, the laboratory Deepmind from Google, discovered that many models were oversized in parameters but underlined in data. To demonstrate it they created the Chinchilla model with “only” 70,000 million parameters, but four times more data. The result was that it beat Gopher, a model with four times more parameters. Architecture. The architecture of the model is another decisive factor in order to achieve an efficient model; A standard architecture is not the same that forces the model to use its entire neuronal network, than one like Mixture of experts which consists of many smaller networks. It would be something like having an expert committee each with a specialty. In this way, the model can choose your expert for each query and not have to use the entire network. For example, with this technique, Mistral manages to use only a fraction of his parameters And so it is faster and cheap to execute. Image | Markus Winkler, via Pexels In Xataka | The ASML-Mistral alliance reveals the European plan B: if we cannot manufacture chips, we will at least control how they are manufactured

If the question is what salary the richest man in the world could have, Tesla has given an answer: 1 billion dollars

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After the judicial battle that ended with the salary bonus block of 50,000 million that Tesla had to pay Elon Musk, the electric car manufacturer has launched an order to its shareholders with a New salary proposal For its CEO: a bill bonus (European billion) if you get the company out of the crisis in which it is mired. The potential value of the salary package that Tesla has presented Before the Bag and Securities Commission, it could raise the fortune of Musk, which is currently estimated at about 435.4 billion dollars, until it became The first billionaire in history If you manage to meet all the required conditions. The salary package conditions. He New salary plan That Tesla has proposed to Elon Musk does not consist of a traditional salary or cash bonuses: the entire figure depends on the flexible delivery of actions throughout the next decade, provided that it meets certain very demanding milestones, such as reaching Total sales of 20 million additional cars. All in the context of a company plunged into A sales crisis global. The shares will be delivered by sections, instead of the end of the period as it happened with its 2018 bonus, and only if Tesla manages to multiply its stock market value until it reaches at least one capitalization of 8.5 billion dollars, starting from the billion that is currently worth in the stock market. To put this figure in context, Nvidia is technological more powerful of the momentand its capitalization is 4.05 billion dollars. It’s not just money: it’s also power in Tesla. In addition, the plan could meet the historical demand of its CEO to have More power within the company. Currently, Musk control around 12% of the actions of Tesla. However, with the new salary bonus its participation in Tesla would increase to 29%. Increase your participation to that percentage would allow Musk increase your influence direct about the company. In this way, it would have enough weight to block important decisions that would not have their approval and further reinforce their position as an essential leader. In one recent interview For the CNBC, Robyn Denholm, president of the Tesla Board of Directors, made it clear to investors to “retain and encourage Elon is essential for Tesla to become the most valuable company in history.” Without a doubt, a salary package of such a draft should be enough to motivate the richest man in the world. Termination clause and a commitment to the future. Such and as they break down in Bloomberganother of the conditions of the new salary package announced by Tesla, it is established that MUSK must remain as CEO of Tesla During, at least, the next ten years to be able to opt for the entire compensation, with a minimum of seven and a half years to unlock the first section of the remuneration. “If it yields, if it reaches the ambitious objectives of the plan, it will receive a participation: 1% for each half billion dollars of stock market capitalization, plus the operational milestones it must achieve to achieve it,” Denholm explained. On the other hand, among the operational challenges that the commercial deployment of one million is found during that time of autonomous robotaxis and of the Optimus robots with integrated Grok, multiplying by 24 the current benefits of the company. Investors will have to vote. After registering the proposal to the regulatory body of the stock market, the next step in its process is to submit the salary bonus to the vote of investors. Something that is still more than A mere formal procedure since the previous 2018 salary package was also voted on a shareholders’ meeting, and finally It was canceled by a court of Delaware for the complaint of one of the shareholders. In Xataka | The shocking thing is not that Elon Musk has lost 80,000 million dollars in 2025: others have earned 102.00 million Image | Tesla, dvids (Trevor Cokley)

They have burned 3.3 billion euros in developments that will never see the light

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There are times that it is better to stop, recapitulate and, in the worst case, throw all the work in the trash. Because there are occasions in which it is better to throw the work in the trash than to move forward and continue trying into a project condemned to failure. That is what should be completed within Stellantis last year. And at the same conclusion this year has been reached. The result: 3,300 million euros lost in developments that will never see the light. In the trash. A few weeks ago, Stellantis published the results of his first half of 2025. The most striking figure was, without any doubt, The loss of 2.3 billion euros. A figure that is still much more striking if we take into account that last year, in the same period, a benefit of 5,647 million was thrown. The figure is explained by the tariffs that the company has had to face in the United States and for a descent in sales. Billing has fallen more than 12%, explained by a 6% sales fall in Europe (with some cars to review, such as Citroën C3) but, above all, 25% in the United States where they had a huge accumulated car stock In the dealers. But, above all, it is explained by money that has gone, directly, in the trash. Hydrogen. With the Presentation of the results The Cancellation of plans of Stellantis related to hydrogen. In its results account, losses of 733 million euros were attributed to the performance of this item in the first half of 2025. That figure was built with investments in Symbioa joint company with Michelin and Forvia for the production of hydrogen -moved vans. The production plant took more than 300 million euros that have not finished anywhere. However, it is estimated that stellantis losses directly related to hydrogen investments have been much higher and They reach about 1.8 billion euros. Keep in mind that Stellantis mounted, for example, a program for convert electric vans in hydrogen versions. Maserati. But hydrogen, which seemed like a future investment to take positions, seems almost the least of the problems when it is observed what is past with the Italian luxury vehicles. The Maserati MC20 is barely being sold and The company has canceled the plans To develop a completely electric version. The result is that in the first half of 2025 they have lost 552 million euros. But the problem is another. The problem is in 2024 when 1.5 billion euros went to drain. China is not the way. The big black point is that in 2024 Stellantis had the production of Electrical versions of the Maserati Quattroporte and Levant. The idea was to sell those cars, mainly, in China where the electric car is triumphing but the process was paralyzed at the last minute. The result is seen in your results account: 1.5 billion euros lost in the development of these cars. Before the Bad results of foreign companies In China, someone decided that it was better to brake and assume losses before the result was even worse than reflected. The intention was that these electrical versions They will occur in Mirafiori (Turin) So investments in personnel and machinery were already made. At least, we had to try to patch the matter. The last piece of dominoes. That obligation to do “something” with the Mirafiori plant was taken advantage of by Stellantis to try to boost the sales of Fiat 500. The electrical version has been added to modify the vehicle’s platform since the car was born as a purely electric vehicle. This last money is not explicitly reflected in Stellantis accounts but it is unquestionable that it has had to assume another stone on the road although it has been awarded to the rest of the investment items since, unlike cars such as Peugeot 3008 (born to house all kinds of technologies)the Fiat 500E was born as a car without combustion versions on the horizon. This last expense, in fact, seems to have been enough for Stellantis does not make the same mistake with the Peugeot 208 And think, from the beginning, to set up the car on a multienergy platform and, in this way, not have to turn back in the project. Even if he had not been born prior loss of 1,500 million euros with Maserati. Photo | Maserati and Stellantis In Xataka | After years of crisis, Stellantis has definitely retired from China: his joint business has entered bankruptcy

We can reach a black hole with a billion euros and a nave of the size of a clip

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The boldest ideas are those that often drive the greatest jumps in human knowledge. AND bold It is the best way to describe this study supported by the National Foundation of Natural Sciences of China. The objective: travel to the darkest secrets of the universe. Short. A astrophysicist from Fudan University, in Shanghai, has designed a plan to send a micronave the size and weight of a clip to the black hole closest to the Earth. The propulsion method? A potent system of lasers fired from our planet. Led by Cosimo Bambi, the exotic proposal intends Test the limits of Einstein’s relativity theory in one of the most extreme environments of the cosmos. Although technology to carry it out is not yet developed, advances in nanotechnology, laser propulsion and detection of black holes could come true in the coming decades. A black hole to discover. The mission of reaching a black hole has two huge challenges. The first is to find a viable goal. The nearest black hole we know, Gaia-Bh1is 1,560 light years. However, our cosmological models tell us that there could be a much closer black hole, “only” 20 or 25 light years of us. “There are new techniques to discover black holes”, Bambi says in a statement. “I think it is reasonable to expect that we can find a nearby one in the next decade.” An odyssey of a century: Once the objective is located, the second challenge will be to get there. Current spacecraft, chemical propulsion, are too slow. The solution proposed by Bambi are nanonaves at a scale of a few grams that only contain a microchip and A solar candle 10 square meters. A set of high -power lasers from Earth could point towards the candle, accelerating the ship to a third of the speed of light. Even at that rate, the trip to a black hole to 20 light years would last for about 70 years. The data to be collected would take another two decades to return to the earth, which places the total duration of the mission around 80 or 100 years. Many reasons to try. If the mission is successful, the experiments that these probes can perform near the black hole would answer some of the deepest unsolved questions of modern physics. Is there really a horizon of events? You could try if the non -return border of a black hole behaves how the theories predict, observing the probe signal while falling towards it. Is Einstein’s general relativity valid? Nanonave’s orbit would be used to detect any Minimum deviation of Kerr’s predictionswhich describes the spacetime around a black hole in rotation. Does the fundamental constants change? The mission could verify whether constants such as fine structure vary in such an intense gravitational field. It would not be cheap. The plan is tremendously speculative. Only the laser system would cost around a billion euros. “It may sound really crazy and, in a sense, closer to science fiction,” admits Cosimo Bambi. However, milestones such as the detection of gravitational waves or the photograph of the shadow of a black hole also seemed impossible in its day. Image | Event Horizon Telescope In Xataka | We have dedicated six years to process images of a black hole to reach a conclusion: Einstein was right

It is that others have won 102.00 billion

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Since Elon Musk snatched Bernard Arnault The richest person title in the world, the South African millionaire has remained in that position retaining a considerable difference with respect to second place. The high point of his fortune It was recorded after Donald Trump’s electoral victory, when Musk’s heritage broke the roof of the 432,000 million dollars overcoming all records. However, in 2025 his financial empire is going through one of the greatest falls in its recent history. Musk has lost 80,000 million of dollars of your assets so far this year. Paradoxically, the reason that made him reach the peak of his fortune, is the same as can make it lose His status as a richest man in the world: consequences of his passage through politics. According to him Bloomberg Millionaire Index At present it is estimated that your heritage is around 357,000 million dollars. It may seem unattainable fortune, but other technological titans such as Larry Ellison and Mark Zuckerberg step on their heels driven by the rise of Investments in AI. Tesla’s falls and its impact on Musk’s fortune Musk’s relationship with Tesla has become a Roller Financial Mountain. In it Second quarter of 2025the company experienced A fall 12% in their income, reaching 22,496 million dollars. In addition, the net profit of the company suffered a decrease of 16%, placing 1,172 million dollars in that period. The Tesla problems They have been so notorious that the trust of their shareholders has also resent And its price has dropped 20% so far this year, after 2024 It would almost double and the company will reach a maximum stock market capitalization of 1.4 billion dollars. These fluctuations have made Musk’s fortune, with Tesla as the main source of income, has lost more than 80,000 million dollars. Some master moves that Musk It has taken out of the sleeve They have caused their personal fortune not to bleed at the same rate as the capitalization of Tesla. An example was the Purchase of X by XAIElon Musk’s company. With this movement, the millionaire made a financial trilero changing x pocket To increase capitalization of Xai and diluting accumulated losses By X. Musk’s relay The US economy is suffering a situation truly complicated Making bobbin by the constant regulatory bands for Trump’s tariff war, its commercial balance and the wars of Gaza and Ukraine. All that instability has turned stock markets into little less than a lottery in which a few days are obtained Milmillionaire gains And the next one is lost Everything achieved. In that context, Musk is not the only one who has suffered a serious Varapalo in his fortune. Jeff Bezos, for example, went from being the second richest person in the world at the beginning of the year to occupy the fourth, and Bill Gates, A historical In the first positions of this list, has fallen to the fifteenth put in recent months. However, a determining factor by which Elon Musk could cease to be the richest person in the world in the coming months does not depend so much on their financial movements or the quotes of their companies, but on how good they are going To others. Larry Ellison, for example, is following the reverse path that Musk. Oracle, the company that founded, has not stopped earning money with the infrastructure of servers in which IA models are developed. Only in 2025, the New York millionaire has increased its fortune by 102,000 million dollars, unseatting Jeff Bezos and Mark Zuckerberg to place itself as the second greatest fortune in the world. Today, just under 60,000 million separate Musk and Ellison in the competition for the throne of the world’s greatest fortune. It is a barbarity of money, but with the rhythm at which losses and benefits of new companies and quoteda bad afternoon and Musk would lose his throne in favor of his good friend Larry Ellison. In Xataka | How much money Elon Musk has: how the fortune of the man who plans the colonization of Mars from a social network is distributed Image | Flickr (Haddad average)

The “Chinese Amazon” has just bought Mediamarkt for 2.5 billion. Amazon has a problem in Europe

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JD.com, the “Chinese Amazon”, has closed the acquisition of Ceconomyowner of the Mediamarkt and Saturn chains. This German giant, which is valued at 2.5 billion dollars, is now in his hands. Why is it important. The movement allows Alibaba’s direct rival to establish its first major presence in Europe. At the same time, Mediamarkt accesses the most advanced logistics technology in the world to compete with Amazon. JD.com acquires 57.1% of Ceconomy through an offer of 4.60 euros per share23% above the previous price. The Kellerhals family, the highest shareholder so far, maintains 25.35% and remains as a strategic partner. The context. Europe is becoming a preferential destination for Chinese investments. The operations to the continent doubled at 2024 to 8,450 million dollars, the highest figure from 2021, According to LSE data cited by Reuters. The Commercial tensions with the United States They are pushing China to look for alternative markets. Europe can offer regulatory stability and a mature market of 450 million consumers. In detail. Ceconomy opera … More than 1,000 stores. In 11 European countries. With 50,000 employees. He invoiced 22.4 billion euros in 2024 … … of which 5,100 million came from online sales. JD.com contributes your experience in omnicanal trade and a logistics network of more than 550 stores managed by AI. Your algorithms predict orders in advance and automatically reposition inventory. The threat. Amazon dominates European electronic commerce, but lacks remarkable physical presence. Mediamarkt, with its network of stores, can offer immediate collection and face -to -face technical service, services that the American giant does not have. JD.com promises to maintain jobs for three years, keep the headquarters in Düsseldorf and respect the current directive structure. The operation is subject to regulatory approval and will be completed in the first half of 2026. Between the lines. JD.com is buying something not entirely obvious: data. Purchase patterns, preferences and behaviors of millions of Europeans. The Chinese giant agrees to enormous market intelligence. The promise of maintaining jobs sounds generous, but in the medium and long term it does not have to be exactly so, and less at this time. Predictably, JD.com will gradually automate processes that now require human hands. If everything goes well, there will be no mass layoffs, but reconversion towards more technical and specialized roles. And now what. European consumers could benefit from more competitive prices and, above all, you deliver faster if JD.com applies Its Chinese standards: Delivery in 24 hours in cities. Delivery on the same day in large cities. The operation marks the moment when China ceases to be the factory in the world to become its distributor. Mediumkt becomes the perfect Trojan horse: a European trusted brand with Chinese technology inside. In Xataka | When the head of Mediamarkt saw the fury that caused this mobile, he had to remove the drums. The rest is history Outstanding image | James Jeremy Beckers

manufactures in a week what the earth takes one billion years

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For centuries, diamonds have been synonymous with luxury, shortage and geological time: a jewel that nature carries over one billion years underground. Now China has found a way to reduce times and create the perfect diamond. Made in China. 70% of synthetic diamonds Used in worldwide jewelry they are already manufactured in China, especially in the province of Henan. In a Financial Times report They have explained That companies like Jiaruifu, led by Feng Canjun, have managed to manufacture a three carat diamond – the typical size of a engagement ring – in just a week. But it is synthetic. Yes, but its irruption has meant an unprecedented disruption in the market of precious stones. As explained by Marty Hurwitz, director of the Grown Diamond Trade Organization, to the British environmentthis is “the first really competitive product that the natural diamond has faced.” And he has done it with devastating consequences: the prices of smaller natural diamonds have fallen to minimums of the last decade. According to data from the Tenoris consultantsynthetic diamond already represents 17 % of the volume of the retail market in the US, and more than half in commitment rings, a key category. 60 years of improvement. After the break with the USSR in the 60s, Beijing was forced to develop its own production capacity. As New York Times collectedthe Soviets used diamonds not only as raw material but as a diplomatic and economic weapon. Given that pressure and without relevant natural reservations, China opted for the technological and long -distance path: produce its own laboratory diamonds. What was born as a geopolitical survival strategy has become a globally dominant industry today. The creation process. As have detailed in FTcompanies such as Jiaruifu mainly use two methods: high pressure-high temperature (HPHT) and chemical vapor deposition (CVD), the latter most recent and effective for large gems. In addition, efficiency is not just technique. The carving process is subcontracts to India, where labor costs are lower, and transport is carried out through hubs such as Dubai or Antwerp, although on the label of the final product there is no trace of its Chinese origin. There is another differential. China does not stay with crossed ones as soon as it has a fixed goal, we have already observed that its plans are never in the short term, we can observe it in Your plans with oil. As detailed The Huanghe Whirlwind company are also making improvements in the diamond creation process, but they wanted to bet on a more sustainable model. In this project they have managed to integrate solar energy into their manufacturing process. This innovation not only drastically reduces the carbon footprint by quilate, but also positions China as a pioneer in “green” synthetic diamonds. A dramatic turn. The traditional natural diamond industry is in check. In 2024, by Beers – the historical giant of the sector— It accumulated an inventory of non -selling diamonds valued at 2,000 million dollars. Its synthetic diamond division, Lightbox, He closed recently After losing competitiveness in front of Chinese brands. To this is added a cultural change: younger consumers no longer demand natural diamonds, and many prioritize price and sustainability. As He has revealed British designer Fei Liu to the Financial Times, at first he resisted using synthetic stones, but the price “flew his head.” Another conquered sector. Beyond technological and commercial success, synthetic diamond is becoming a new strategic front for China. The Government has not left the market to operate freely: in Henan, the Provincial Administration has promoted the creation of a diamond association with the aim of stabilizing prices and avoiding a destructive career down. As He explained Feng Al Financial Times, a minimum price of $ 15 per caa has been set for the stones between one and ten carats. If a company sells below that threshold, its competitors can report it to the authorities, which will intervene. This policy reminds the strategy adopted in the electric car sector, another field in which China He has led technologicallybut where excess supply and fierce competition also caused price wars. In both cases, Beijing has sought to impose order in sectors considered key to industrial sovereignty and the country’s geopolitical positioning. Compressing times. In that process, the Asian giant has challenged a centenary industry, has democratized luxury and has drawn a new map for the global diamond trade. What was previously a symbol of rarity and eternity, today can be produced in mass, sold at a low cost and with a minimum ecological footprint. The diamond is no longer what it was. And it is very possible that, for most consumers, that is not necessarily a bad. Image | Pexels and Unspash Xataka | Antimony under another flag: the Chinese mineral that continues to enter the US disguised for Thai or Mexican export

Nvidia is the first company to reach 4 billion dollars of capitalization

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Nvidia has achieved something historical: becoming the first company quoted to reach 4 billion dollars of stock market. During Wednesday’s session, the company’s shares They reached this symbolic milestonesurpassing both Apple and Microsoft. An ephemeral but significant achievement. Although Nvidia’s actions closed the day with A 1.8% riseplacing its valuation slightly below the 4 billion, the fact of having touched this figure during the session marks a historical moment in the markets. The company has managed to overcome giants like Apple, which began the year as The most valuable company in the world With 3.9 billion dollars, and Microsoft, which for months has exchanged positions with Nvidia as the ranking leader. The AI ​​revolution drives Nvidia. The meteoric rise of Nvidia It is explained by its central role in the boom of artificial intelligence. Their specialized chips feed on data centers that companies such as Microsoft, Amazon and Google need for their AI models and cloud services. This strategic positioning has catapulted its actions 22% so far this year, despite geopolitical turbulence and commercial restrictions with China. The numbers speak for themselves. In its last fiscal quarter, Nvidia generated $ 44,100 million in revenue, an increase of 69% compared to the same period of the previous year. The forecasts of the sector are even more optimistic: the global expenditure on the infrastructure of the 200,000 million dollars in 2028 is expected to exceed 2028, according to The International Data Corporation research firm. Obstacles on the road. Not everything has been a rose path for the company. Export restrictions of Your H20 chips China has cost about 8,000 million dollars in lost sales. In addition, the irruption of Deepseekthe Chinese startup that was planted out of nowhere with it developed from a powerful model and promising to have reached its milestone With ridiculous costs compared, caused doubts On whether the expensive Nvidia chips were really essential for the advance of AI, temporarily sinking your actions in January. Overflowing expectations. Despite these setbacks, Wall Street analysts maintain overflowing optimism. The Loop Capital firm esteem That Nvidia could reach a capitalization of 6 billion dollars in 2028, arguing that the company essentially maintains a monopoly in critical technology for the AI ​​sector. For its part, CEO Jensen Huang, who has become The tenth richest person in the worldaccording to the Bloomberg index, with a equity of 140,000 million dollars, See a promising future Ahead: “Of course, we know that AI is this incredible technology that will transform all industries, from the way we do the software to medical care and financial services to retail trade until, I suppose, all industries, transport, manufacturing … and we are at the beginning of that.” Cover image | Nvidia In Xataka | Depseek marked a turning point in OpenAi: now reinforces its safety while GPT -5 appears on the horizon, according to FT

The weird event that humanity has witnessed on average, each billion the age of the universe

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Year 2019. In an underground laboratory, A kilometer and a half under the Masso del Gran Sasso in Italya dark matter detector witnessed something extraordinary: the radioactive disintegration of an atom of Xenon-124. It is the slowest process (And therefore, more rare) Never registered. They touched the cosmic lottery. The Xenon-124 has a semi-width of 1.8 × 10²² years. That is 18 followed by 21 zeros: 18,000 trillions of years. To put it into perspective, the universe has “just” about 13.8 billion years, so that the process that Italian scientists could observe in 2019 is a billion times more durable than the universe’s own age, as The researchers described it In Nature magazine. A little context. The “semi -experience” is a statistical measure similar to half -life, but specifically defines the semi -dear period of a radioactive substance. Uranium-238, for example, has a semi-width of 4.5 billion years. In the case at hand, the semi-experience tells us how long it has to pass so that half of a very large group of Xenon-124 atoms disintegrate and become another element, the teluro-124. For an individual atom, its disintegration is a purely random event. A concrete atom could disintegrate in the next second or be stable for a much greater time than its semi -experience. For a group of atoms, the semi -experience is a very reliable prediction of its collective behavior. If you had a container with a large number of Xenon-124 atoms, you would have to wait 18,000 trillions of years for half of the atoms to transform. How did they do it? With a very large container, which contained 3.2 tons of ultra -overthopuro liquid xenon. We refer to Xenon1t experiment of the National Laboratory of Gran Sassoin the center of Italy. A dark matter detector designed for the direct search for hypothetical Massive weak interaction particles (WIMP). The detector was designed with extreme sensitivity and built under a mountain to isolate it from cosmic radiation. But what he captured was not dark matter, but the whisper of an atom of Xenón-124 decomposing; transforming into Teluro-124. The weirdest event ever witnessed. It is not a hyperbole. It really was a milestone of experimental physics that we should not have seen even in a billion lives of the universe. But although the probability that an atom of Xenon-124 disintegrate in a year is practically nil, the detector contained almost 10,000 billion xenon atoms in the two tons of volume that were analyzed. With such an overwhelming amount of “lottery tickets”, the probability that at least one disintegrate during the observation period increased dramatically. During the 177 days of data collection, the team observed not one, but a total of 126 events that could later confirm how the decay of the Xenon-124, a type of radioactive disintegration allowed by the standard model of particle physics, but practically undetectable. What did they see. An atom of Xenón-124 disintegrates when its nucleus simultaneously captures two electrons of the innermost layers. This causes two protons to become neutrons, transforming the atom into Teluro-124. But the energy released is carried by two neutrinos, which escape without being detected. What the Xenon1T photomultipliers detected up to 126 times was the X-ray waterfall and omer electrons that occur when the electrons of the upper layers of the Xenon-124 fall to fill the gaps that have left the two captured electrons. This is the energy firm, the “flash” that betrays the weird event of the universe. Has it served for something? For more than it seems. Although there was no luck with dark matter, the detection showed that Xenon1T can capture an incredibly weak and rare signals, validating its design. But the measurement also provided experimental data to test and improve the theoretical models that describe the structure and stability of atomic nuclei. This observation is a general trial for an even more ambitious goal: the search for double electron catches without neutrinos. If this hypothetical process was detected, it would demonstrate that Neutrinos are their own antiparticles (What is known as Majorana particles). This would explain why the universe is made of matter and not of antimatter. Image | Lngs In Xataka | When no result is a good result: Xenon’s story and the search for dark matter

The US feared a boycott of its tourism sector. It already has a first calculation and shows a hole of 12.5 billion dollars

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He “Make America Great Again” promises get expensive To the American tourism industry. Fulfilled the first 100 days of Trump’s mandate and after a start of the year marked by the Tariff warthe aggressive immigration policy from Washington and his distancing from historical allies, such as Canada or the EU, US tourism faces turbulence. He last report of the World Travel and Tourism Council (WTTC), based in London, predict that distrust From foreign travelers it will cost the country around 12.5 billion dollars. And the figure goes with a message included. “This is a US government attention call”, warns The WTTC. What happened? That the WTTC, a forum that brings together the private tourism industry, has just thrown a jug of cold water at the expectations of the sector in the US. And the reason is very simple: according to the forecasts of its technicians the travel, hotels, restaurants and other businesses that depend on tourism will enter much less dollars out of foreign pockets. To be more precise the WTTC talks about a loss of about $ 12.5 billion in foreign visitors spending, an “amazing sum”, Apostille. Where does that data come from? The organism does not clarify how it has calculated it, but it does contribute some context. According to your data In 2024 international visitors who arrived in the US spent about 181,000 million dollars. If its forecasts are fulfilled, in 2025 the figure will remain in “just under 169,000 million”. It is a forecast that could vary if the circumstances that have motivated that collapse of spending, but a priori leaves two bad readings. The first is an interannual fall of almost 7%. The second is that the US tourism industry moves away from the data it handled in 2019, before the pandemic. He WTTC calculates that during that year foreign visitors generated a revenue flow of about 217.4 billion euros that promoted job creation in the country. “Today that legacy is in danger,” warns the organism in A statement in which he sends a couple of errands to Donald Trump’s executive. Why is it important? For the weight of tourism in the American economy and the threats it faces. The US is one of the main destinations of the world. His trade department estimates that last year he received some 72.4 million of international visitors who contributed to the tourism and travel sector contributing, as a whole, 2.36 billion of dollars to the national economy and generate more than 20 million jobs. The administration itself benefits from this activity via tax revenues. The problem is that the vast majority of that tourist expense (almost 90%) It did not start with visitors from other countries but from the domestic market, of travelers who moved nationwide, within the country. For the WTTC that percentage is somewhat a challenge. “This strong dependence on local tourism masks a serious vulnerability: true growth resides in the international market, and the US is losing its leadership,” They warn. Spain leaves a good example: the flow of foreign tourists moves in record levels while falls The domestic. Is there anything else? Yes. WTTC forecasts contradict those who handled It is not so much The US National Travel and Tourism Office (NTOO), which expected the flow of international visitors to the US to increase 6.5% between 2024 and 2025 to reach 77.1 million. In 2026 he even trusted to reach 85 million, which would exceed the data prior to the pandemic. By 2027 it provided for an expense level of 279,000 million Of dollars, quite above what the WTTC now forecasts for this year. Are all forecasts? No. The study of the WTCC cites data from March of the US Department of Commerce that already reveal a contraction in the flow of international tourists. Specifically, it shows an interannual “prick” of 15% in the British market, of more than 28% in Germany, almost 15% in South Korea and between 24 and 33% in “other key markets”, such as Colombia or Spain. “As expected, the Canadian market is exhausted: reserves in early summer have dropped more than 20% compared to last year,” Add the WTTCwhich ensures that in general the country is receiving fewer visitors from both its neighbors and distant nations, “a clear indicator that the global attractiveness of the United States decreases.” The agency ensures that it is the only destination of the 184 analyzed that faces the 2025 exercise with a downward forecast. And what is the reason? The newspaper The New York Times remember That in 2024 the spending of travel in the US already remained below the values ​​prior to the health crisis, basically due to the strength of the dollar and its influence on the budgets of tourists from other countries. The situation is quite different today. Both in regard to The currency as to the geopolitical context, which explains for the WTTC what is happening to foreign tourism in the United States. “The world’s largest economy and tourism is on a bad way, not due to lack of demand, but action. While other nations extend the red welcome carpet, the US government hangs the ‘closed’ poster, closed ‘, Julia Simpson ditchExecutive Director of the WTTC. “If urgent measures are not taken to restore travelers’ confidence, the US could take several years to return to the expenditure levels of international visitors prior to the pandemic.” Is it something unforeseen? Not quite. The tariff war, Washington’s clash with Denmark, Canada or Mexico and especially arrests In the borders and the confusion with visas It has been affecting the flow of travelers to the United States for some time. In fact there is talk of A boycott that extends beyond tourism, industry and Commerce. The US International Trade Administration already registered in March that the number of European visitors who spent at least one night in the country had fallen 17% With respect to last year. The data could be explained in part for the effect of Holy Week … Read more

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