In Spain there is a surname that was for centuries a social conviction. Today thousands and thousands of people use it

In North Korea there is a word that marks the life of its 26.4 million inhabitants from the cradle: Songbuna term that is usually translated as “origin” or “seed” and that in practice works as A caste system based on the merits of the ancestors. If your grandparents and parents have a good file that translates into a good Songbunwhich guarantees facilities throughout life. Discol ancestors with the regime carry the opposite. In Spain Songbun It sounds distant concept, but for a long time there were certain surnames that complicated the future to those who took them, including an especially popular one that they share today tens of thousands of Spaniards. Surname question. Babies do not arrive with a bread bar under their arm, but they do with something that defines them much more: surnames. Its history is long. And complex. In Rome they already used the Tria payrolla system that identified citizens with several ‘labels’ (roster and cognomen) that went beyond the simple first name and revealed the family clan from which they came. With the passing centuries, surnames have evolved to the current system, sometimes with key changes, such as the driven In the sixteenth century by Cardinal Cisneros and that contributed to the fact that in Spain we have two surnames. But … And when are there no parents? Each of us we have taken surnames of our parents, but … What happens when that figure does not exist? What happens to ‘uprooted’ babies who were abandoned to the gates of churches and end up creating in orphanages, without a known family? In those cases it had to pull inventive, although it was not strange that the institutions resort to certain formulas standard that if for something stood out it was their total lack of touch. In even many children received surnames such as incognito, Diosdado, white or lying. In Catalonia, it was also resorted to Deulofeua formula that can be translated as “God did”. And that to quote only a handful of examples. On other occasions, more imaginative solutions were chosen, such as religious references or the place where the creature had been found, a frequent practice for example in Gipuzkoa for a good part of the nineteenth century. Antton Iparraguirre had a few years ago in Basque newspaper How between the sixteenth and eighteenth centuries there were quite a few orphan from Pamplona who received the surname Goñi in tribute to Don Ramiro de Goñi, benefactor of the General Hospital. Distribution of the surname Expósito (as the first last name). The last name of the “abandoned”. Another helpful solution (much less discreet) was surname Expósitoa word that comes from Latin expositus, Exponowhich means “put out.” Expósito thus became the last name of the abandoned, those creatures that their parents disregard because they could not afford their parenting, for shame or because their parents had not recognized them as legitimate. His luck was to end up care of the State or the Church, breastfed by nodrizas. Only the luckiest ended up prohibited. More than a last name. “Expósito was and is more than a surname, it is a label that pointed to both the person who had unknowns, unknown parents, as well as their descendants, since it proclaims the four winds that at some point the origins are uncertain,” Write The genealogist Mireia Nieto in great -grandson. In Your essay On the abandonment of children between the eighteenth and nineteenth centuries and the Pamplona orfelineo, historian Lola Valverde also recalls that the figure of the Expósito was presented in a way as that of “a condemned by society.” “As if he were guilty of his situation and to accept his destiny without rebeling, educational approaches are outlined,” he reflects. The last name exposed became a brand, a label that reminded them of for life (them and the rest of society) that were the result of abandonment. The echoes of your stigma can still be found in The regulation of the Civil Registry of 1958, in which the judges are recognized the power to manage changes of the surname “or other analogues, indicators of unknown origin”. A figure: 34,084. The times of the old orfeliners of the old regime, to which children arrived familically and terrified, which reduced their survival possibilities, are already behind, but not the last name exposed. Although it is not even from far as popular as “García”, “Pérez” or “González”, the database The INE shows that today identifies tens of thousands of people in Spain. 34,084 They use it as the first last name, especially in Lugo, Badajoz and part of Andalusia. 37,332 They use it as a second. There are even 382 that are named “Expósito Expósito”. And another Good handful of hundreds that are used. Images | Wikipedia and INE In Xataka | Why the Spaniards, unlike the inhabitants of other countries, we have two surnames

Our body is full of almost indestructible “eternal chemicals.” It turns out that we have the solution in the intestine

“Eternal chemicals” is a name with great loudness. They are practically indestructible molecules, and the problem is that they are really harmful for both nature and us. In recent years we are taking it seriously and we have sought Remove them with guns with electron beams. Also through forms of break their molecular bondsand now a bacterium can become an ally to end these eternal chemicals. And it will be as easy as taking a capsule. A slow poison. The perfluoroalquiladas and the polyfluoroalquiladas, known as PFASThey are a relative of about 4,700 synthetic molecules that have great resistance due to the unions between fluorine and carbon atoms. They are very useful for that resistance, since the molecular union is very stable and does not react to external agents. The problem is that they are used in many products (hygiene, textiles, pesticides, containers or Even in the wine), they accumulate in nature by not being destroyed and, potentially, also in our body. PFAS and their derivatives, such as trifluoacetic acid, are related to soil contamination and water sources. And the prolonged exposure to certain PFAS has been related With a higher risk of kidney cancer and testicles, alterations in the immune system, changes in cholesterol, fertility problems and increased blood pressure in pregnancy. Intestinal bacteria. That is why we commented on some lines: we are looking for how to end them. It is difficult, but researchers from the University of Cambridge have TOP With an unexpected ally: human intestinal bacteria. Specifically, the Faecalibacterium prausnitziian intestinal bacterium that, together with others found in our body, has proven to be very effective absorbing pfas. In experiments, and as they point out in Natureresearchers have found about 38 bacterial strains that absorb these eternal chemicals. Basically, they quickly accumulate great concentrations of PFAS minutes after exposure to them. How do they do it? Catching toxic compounds within cell groups, protecting both themselves and the host. Come on, putting the pfa in quarantine. Swallowing more and more. To test it, the toxicology unit of the University of Cambridge experienced with mice that had ingested PFAS. They introduced nine bacterial strains in their organism and observed that these bacteria quickly trapped the PFAS and then were naturally expelled through the feces. The interesting thing is that bacteria work more intensely at greater concentration, with constant elimination rates of between 25% and 74% of the PFAS present in the body. Horizon. Studies are constantly published in which they tell us how they have discovered the potential of something to improve our life, but usually, the conclusion is usually a “we need more evidence and we will see.” In the case of bacteria that engulf eternal chemicals, researchers have something clearer what the road map is after those first experiments in mice. In the next steps, they will explore the development of Probiotics specifically aimed at improving our defenses against PFAS, and they have it so clear that they have founded a startup of biotechnology To develop these products. The objective is that the first is ready by 2026 and what these specialized probiotics will do will be to capture chemicals before they are reabsorbed in the intestine and “encapsulate them” for excretion through the digestive system. Images | Cambridge University In Xataka | Some bacteria can “feel” the acid in their surroundings. And his way of adapting is mutating

The US is throwing blows to China. Many of them are fitting the European chips giant ASML

ASML It is going well, but it could go much better. This Dutch company is the most important photolithography equipment manufacturer on the planet. And it is because it is the only one that can offer its customers the machines of extreme ultraviolet lithography (UVE) that are necessary to MANUFACTE INTEGRATED VANGUARD CIRCUITS. Even so, during the last three years this company is constantly undergoing all types of fluctuations. In fact, in the last hours his actions They have dropped to 7.1% Due to the threat that the very likely US tariffs represent the importation of foreign lithography equipment. And also to the uncertainty that looms over the growth of ASML In full struggle between China and the USA. Christophe Fouquet, the general director of this company, has the obligation to defend the interests of his company. And currently the tension held by the US and China does not make it easy. The sanctions that They have deployed US and the Netherlands They prevent Asml selling Your most advanced lithography teams To its Chinese clients. And neither can some maintenance and after -sales services services provide. In 2022 the sales of this company in China amounted to 2.9 billion euros, which represented 13.8% of its annual sales. At that time Taiwan was a more important market for Asml than China. However, in 2024 the country led by Xi Jinping was consolidated as The largest market for ASML with total sales of 10.2 billion euros. Asml’s rebellion Christophe Fouquet has removed the growth forecast that he and the board of directors of this company had set by 2026. This movement has contributed, as I mentioned a few lines above, to the fall of ASML’s actions. Anyway, it is understandable that this executive has taken this path: “We continue to observe a growing uncertainty promoted by macroeconomic and geopolitical events,” He has declared Fouquet In a statement. “Although we continue to prepare to grow in 2026, we cannot confirm it yet.” The evolution experienced by the actions of this company supports its prudence. In fact, 33% have fallen during the last year. This behavior is anomalous in a company that not only leads the market of photolithography equipment; In addition, it is the only one that markets UVE machines. At the end of last March Christophe Fouquet declared that he was convinced that the US would continue to put pressure on his partners to even more harden the sanctions that seek to stop the development of the Chinese industry of the integrated circuits. “Although we continue to prepare to grow in 2026, we cannot confirm it yet” However, Fouquet’s statements did not end here. He also defended that Europe “should decide for itself what you want” and “should not be dictated by anyone else.” Otherwise, He warnedleading European companies in strategic technologies, among which are ASML, could consider moving outside the old continent. His tone reflected a certain degree of helplessness, but in practice his company would be very difficult to relocate out of Europe. Anyway one of the figures in which we have repaired a few lines above gives us a very accurate track about how A ASML is dealing with prohibitions from the US and endorsed by the Government of the Netherlands that They could greatly degrade your business. As we have seen, in 2024 China was consolidated as its largest market. This success is because Chinese manufacturers of integrated circuits have bought A ASML many suitable photolithography equipment to produce mature semiconductors. On the other hand, currently TSMC, Intel, Samsung, Globalfoundries, Micron Technology and Sk Hynix are well building new chip manufacturing plants, they are well expanding some of those they have in operation. In any case, they all have something in common: they are buying the UVE and UVP equipment of ASML. And, in addition, TSMC, Intel and Samsung presumably will acquire for the next three years a large number of UVE Machines of Haute Opening. It is evident that even in the complicated current situation It is difficult to lie to ASML. At the moment his business in China endures, and will continue to do it at least until the moment when Chinese manufacturers of lithography equipment have their own UVE machines. Image | ASML More information | SCMP In Xataka | Japan wants to recover leadership as a manufacturer of lithography equipment. And he has a plan to end the Asml monopoly

If you also feel that you do not have so much time to read as you would like, there is a solution: the “fast reading”

I confess that Bill Gates gives me some healthy envy. Not just to have A current account which looks like a phone number with so many figures, but for its ability to Read more than 50 books a year. I have tried and it has been impossible for me. But Do not shoot the towel. Scientific evidence revealsthat there is a balance point between the speed of reading and the ability to understand and retention of the content that is being read. However, with adequate practice, that balance can be improved by accelerating the reading speed without compromising Reading understanding. Research Like those of the University of Guayaquil, they conclude that the reading speed can increase significantly with the practice and use of appropriate techniques. An average reader reads between 200 and 400 words per minute, while through rapid reading training, that speed can reach speeds of up to 1,000 or 1,700 words per minute. Strike a balance Fast reading is especially useful for processing long texts superficially, being useful for obtaining general ideas or punctual information. It is not recommended in contexts where a deep understanding, detailed analysis or memorization of the content is required, but when it comes to seeking specific information or in texts that address subjects of which previous knowledge is already had. The main ones involved in a slow reading speed are: Subvocalization: It is the habit of mentally pronouncing the words that are read. That limits the reading speed since the visual image of the word that interprets the brain is vocalized as if you are reading aloud, undergoing the need to vocalize each of the words and not limit itself to the compression of it. Word reading by word: The global understanding of the text decreases. Regression: reread several times or have to search in the next line of text as it breaks the reading flow. Low concentration: It affects both speed and retention. Quick Reading Techniques Science reveals that this speed increase is not a magical process, but the result of the conscious training of eye movements, vocabulary expansion and the use of strategies to improve global understanding, and not only the amount of words read per minute. 1. Fragmentation This technique is to avoid reading word by word and assimilating the Words by groups. For example, to start training, you can group the words of the phrases of two by two and increase the number progressively With practice. At first it may be a bit strange, but the brain recognizes the words for its morphology, which explains, for example, that you Cberreo Pdeue Read Etse Txeto. If you read it Word A Word would cost you more than in block because a word contextualizes its adjacent. This principle makes your view jump between words, not word in word during reading. The usual thing is to start reading like this:In-a-place-of-the-scan-of-whose-name-no-quiero-alleging But with a little practice, we soon start reading like this: ANDn a place-of the stain-of whose name-I do not want to remember With proper training, the number of “pauses” is reduced: In a place in the stain-of whose name I do not want to remember. 2. Use a visual guide The rupture of the reading flow is one of the most frequent causes for reading the reading. This usually happens when you have difficulty finding the following text line. The solution: as simple as using the finger to indicate the start of the next text line or an equivalent visual guide. On screens you can use the mouse pointer as a guide. If you prefer Read on mobiles or tablets, the edge the screen or any other reference can contribute to the view not to hesitate when looking for the next line and the reading inertia is maintained. 3. Be faster than voice If when you read you listen to the words in your brain, you are not reading quick enough. As we have said before, this phenomenon is known as subvocalization. To avoid this, it will be necessary to train the reading speed trying to read faster than that inner voice is able to vocalize. In doing so, it will be forcing the brain to prioritize visual processing instead of the “auditory” of your internal voice, thus improving the reading speed. 4. Infinite look Like any other muscle, ocular muscles should also be exercised to improve reading speed. One way to improve your performance is to practice infinity to get a visual sweep of the most efficient text. This technique consists in drawing the infinity symbol (∞) on the text block, so that the look runs in a more global way, not line by line, and improves the capture of words by blocks. In Xataka | The productivity books that have helped me the most: the recommendations of the Xataka editors Image | Unspash (Thought catog, Eliott Reyna)

Web week and 26th anniversary. These are five of the best mediamarkt offers in technology

Some stores continue to launch chollos during their summer campaigns and Mediamarkt right now, both the 26th anniversary (has expanded its deadline) as its Web week. Both will be available until July 24, so we have taken advantage of this article to gather Five of the best offers in technology that are available during the weekend. OPPO FIND X8 PRO by 934.15 euros By adding it to the cart, a mobile with a Top camera at the minimum historical price of Mediamarkt. Woxter Scriba 195 by 59 eurosa superbar with physical buttons to devour digital books. Philips Bliss by 139 eurosone of the roof fans with more popular retractable blades. Apple Watch Series 10 by 369 eurosone of the best prices that Mediamarkt has had to date. Samsung Jet 75e Pet by 269 eurosa Samsung cable -free vacuum cleaner with good construction and several accessories. OPPO FIND X8 PRO By surprise, during the website, Mediamarkt has launched a direct discount on the OPPO FIND X8 PROcombined with an additional discount when adding it to the cart. In this way, you can buy the mobile by 934.15 eurosthe best price that the store has had to date. He OPPO FIND X8 PRO It is a large 6.78 -inch mobile that offers a maximum brightness of 4,500 nits and compatibility with Dolby Vision. Its processor is the MEDATEK DIMENSITY 9400 and comes with 16 GB of RAM and 512 GB of internal storage. But Where it stands out is in its photographic sectionsince on the back it includes four cameras: a 50 MP main sensor, a large angle of 50 MP, a 3X 50 MP telephoto and a 6X telephoto of 50 MP. OPPO FIND X8 PRO (512 GB) * Some price may have changed from the last review Woxter Scriba 195 It is not really necessary to make a disbursement of more than 100 euros in an ereader, below that figure we can find interesting models. One of them is the Woxter Scriba 195which has come down in Mediamarkt to the 59 euros. It includes a six -inch screen, comes with physical buttons instead of touch screen and has 4 GB to store many digital books, although it allows you to add a microSD card of up to 32 GB. * Some price may have changed from the last review Philips Bliss Philips Bliss It is one of the most popular ceiling fans on the market thanks to its value for money. By 139 euros In Mediamarkt (although it is somewhat cheaper in Amazon and PCComponents), we talk about a fan with retractable blades that has DC motor instead of ACwhich translates into greater energy efficiency. Includes adjustable light, several speeds of the blades and is very silent. * Some price may have changed from the last review Apple Watch Series 10 Mediamarkt has not launched some Apple Days, but we can find a good price in one of the brand’s watches. He Apple Watch Series 10 has dropped to 369 euros (Broken the historical minimum of the store) in its 42 mm GPS version. The screen is larger than in the previous generation, it has a more comfortable design, Its performance is impeccable and comes with many sensors: SPO2, heart rate, accident detection and sleep apnea, among others. Apple Watch Series 10 (GPS, 42 mm) * Some price may have changed from the last review Samsung Jet 75e Pet Beyond Dyson or Rowenta, there are many other brands that have cable -free vacuum cleaners at a very good price. He Samsung Jet 75e Petfor example, it has dropped in Mediamarkt to the 269 euros: It offers a suction power of up to 200 AW, its battery can be extracted and has an autonomy of up to 60 minutes, it is ideal for households with pets and includes a good assortment of accessories. * Some price may have changed from the last review Some of the links of this article are affiliated and can report a benefit to Xataka. In case of non -availability, offers may vary. Image | Mediamarkt and Buyardation (header), Oppo, Woxter, Philips, Apple, Samsung In Xataka | What roof fan buy. Better recommendations to succeed and five models from less than 110 euros In Xataka | Better cable vertical vacuum cleaners. Which buy and seven broom vacuners recommended from 139 euros

800 million invested so far from 2025

Amancio Ortega is the First fortune from Spain and Puja for being from Top 10. Only with Inditex, his Golden Eggs, Receive 98 euros per secondand that money he earns with the company of his eyes, reinvested him in Pontegadea. It is about Amancio investor armand in recent years he has dedicated himself to buying expensive buildings all over the world with a single objective: to become one of the largest homemade on the planet. And in what we have been in 2025, 800 million euros has already been scratched. Hotelito in Paris. Pontegadea is leaving a lot of money in buying buildings. The idea is that Amancio is homemade from his own stores, but there is a lot behind. An example is the 87,000 m² primark distribution centerowned by Pontegadea. Primark is the main rival of Inditex in Europe and its flagship store in Gran Vía in Madrid, with its 12,500 meters, also It belongs To the company of Amancio. One of the latest acquisitions of this real estate arm is a hotel in Paris that belonged to the Spanish chain Derby Hotels. As we read in Europa Pressthe hotel is located in a historic building in the center of the French capital and Derby took him in 2007 for 75 million. Now, Pontegadea has disbursed about 97 million through the building. And Sabadell in Florida. That amount remains in nothing if we compare it with an office tower in Florida that, as we read in ELECONOMISTthe Amancio company would also have acquired these last days. It is about Sabadell Financial Centera 30 -story building in which they are, among other offices, those of Banco Sabadell in Miami, for a whopping 275 million dollars. As the economic environment points out, the agreement must be closed, but if it became, it would become the largest sale of offices so far this year in the southern zone of Florida. Sabadell Financial Center in Miami 2025 of tremendous expense. These two acquisitions (again, in the absence of closing the agreement with KKR by Sabadell Financial Center) are an example that Pontegadea does not raise the foot of the accelerator. It is one of the most active real estate companies in Europe, with total assets valued at 110,000 million euros and the firm intention of not ceasing to grow. You have to add your New “Headquarters” in Luxembourgother skyscrapers of 46 plants and 259 floors in Florida for about 165 million dollars, Offices in Dublin For 70 million dollars and another huge investment in Spain: 250 million euros for the 28,000 square meters of the Planeta Group headquarters in Barcelona. Grupo Planeta headquarters Everything remains at home. As we said some lines, the goal of Pontegadea – and from Amancio – is to become one of the world’s largest. Unless you have plans to take your own offices to those buildings, you acquire them to realize them, as we have seen in the case of Primark. And they are rented to the competition, to Amazon and other technological ones, to tenants in the luxury floors of Florida’s skyscrapers or their own companies. The reason? Much of the Inditext stores around the world are on properties that are from Pontegadea. Everything remains at home and is a way of protecting against market fluctuations. If your clothing store is in your own building, They do not affect you uploads of rentFor example. It is another way of diversifying the business, a key strategy among billionaires and that in Inditex itself we have seen with brands such as Oysho consolidating as a brand of sportswear (in principle they focused on underwear and being at home) or with their Zachaffé coffee shop chain. Images | 1111brickellGtres In Xataka | Millionaires found in the luxury watches a refuge value. Now the bubble has exploded

The mythical An-124 had been trapped for years and now it flies again

Inheritance of the Soviet UnionUkraine has both larger aircraft in the world (If we don’t count the monstrous Stratolaunchclear). Or had. On the one hand, a beast with wings called Antonov AN-225a unique model in the world that had a large load capacity and that could carry spacecraft on its back. On the other hand, the Antonov An-124, another somewhat smaller load model. With the Start of the Ukraine Warboth were trapped. Now the AN-124 sets the skies again, and it is much more than to see this giant fly again. Soviet monsters. In the context of the Cold warone of the battles was that of “I”. The United States flew for the first time in 1968 the imposing Lockheed C-5 Galaxy For transport of troops, becoming the new largest plane in the world. The Soviet Union was not going to stay with a crossed arms and began working in its replica. Thus, two companies (Aviastar-SP at Uliánovsk, Russia, and Aviant in Kyiv, Ukraine) undertook design and RPUEBAS work in parallel. The result was the AN-124, a huge cargo plane with an imposing front that is physically similar to Lockheed C-5 Galaxy, but something bigger. It was introduced in 1986 and, just two years later, the AN-225 Mriya appeared. Aviant Fruit (current Antonov) a larger version, with six engines and with a wingspan that prevented him from landing in 65% of airports around the world. After all, although it was a cargo plane, it was focused on transporting the Soviet transforder Burán and any other element of the Soviet space program. See this live must have been impressive Antonov Airport Battle. And if I speak of Antonov AN-225 in the past it is because, with the beginning of the Ukraine War, both the AN-225 and the AN-124 with registration U-82073 were catching you in one of the Ukraine airports. Since it is logical, for security reasons, the flights were suspended and the ships were abandoned to their fate in the Hostomel airport. The AN-225 that once surprised the world, was completely shattered. At first, the plane pilot said that the ship was intact, but shortly after confirmed the destruction of it. This meant more than the destruction of an airplane because yes, the AN-225 made few missions a year (putting it in the air costs a million dollars), but it was a symbol of Ukraine. The AN-225 UR-82073. The AN-124 is not so unique because Russia has a couple of dozens, another seven and there are units owned by other countries, but the UR-82073 has become another symbol of Ukrainian resistance. In addition, it is a model Very important for the transport of goods in Europe. Also abandoned, he got what his older brother does not: survive bombings. Removing Russian ballast. The last three years, the ship was stopped and partially disassembled, but from Antonov they have been working secretly with a goal: to modernize it. These tasks began before the war with the aim of replacing the Russian key components with parts made in Ukraine and in the West. The Russian invasion He modified the plans and caught the operators with half-work, but they continued working and, just a few days ago, the AN-124-100 Ruslan, now renamed IRPIN, has re-crossed the skies. Furtive flight. Symbolic flight. With a nose that proudly shows a “Be Brave Like Irpin” -“is brave as Irpin” -,, now It has new airplane and navigation systems that meet the current standards. IRPIN is a Ukrainian city located west of Kyiv that played a relevant role At the beginning of the war and on July 11, the plane furrowed the Ukrainian sky with the transponder off until crossing Poland. He Transpose It is a piece that gives real-time information about the ship as its location and altitude, and everything indicates that Ukraine did not want Russia to know that the UR-82073 was again in the air. Your destiny? Leipzig, in Germany, where Antonov has its new operations base. Antonov itself shared the video of the feat a few days ago and it is they who They affirm that “the relocation of” Ruslan “was not only a technical decision, but a symbol of resilience, professionalism and unity of Ukrainian aeronautical builders. The modernized” Ruslan “will continue to fly and serve Ukraine in the international arena.” And the AN-225? Happy end to the AN-124, but … will Ukraine leave as if nothing the destruction of the AN-225? When I said there was only one AN-225, it was half truth. There was really a complete and operational, but they had one “in half” stored. As it is a practical plane, it was not considered necessary never It was completed. In July 2024, however, the situation turned a turn. David Lomdzharia, president of the state conglomerate of Defense of Ukraine, affirmed who want to rebuild the AN-225 Mriya from that second incomplete fuselage. It has been saved since the Soviet era, so the State is not known, but Antonov has saying They have already started work and cost about 500 million euros. In the end, if Ukraine reconstructs the AN-225, he would do it for more symbolic than practical reasons, but we must wait to see why there are no dates or anything on the table. At least, publicly. Images | Tapia379, Oleksandr Ratushniak, Dmitry A. MottlAntonov In Xataka | Something extraordinary has happened in Ukraine: for the first time an unmanned boat has knocked down Russian combat planes

We have detected the greatest fusion of black holes seen to date. It is a problem for our theoretical models

One of the enigmas that most intrigue astronomers is that of Black holes of intermediate size, those black holes halfway between the holes of stellar mass and the supermassions such as the one that dominates in the center of our galaxy. These are black holes with masses between 100 times that of our sun and those that multiply this star mass by millions. GW231123. A group of Ligo-Virgo-Kagra (LVK) collaboration researchers (LVK) has announced The detection of the greatest clash between two black holes registered to date. The discovery has occurred thanks to the gravitational waves generated by the impact, whose signal has been called GW231123 by those who detected it. November 2023. The name of the signal refers to the date on which it was observed, on November 23, 2023. The study of the detected waves led those responsible for the new study to estimate that the resulting black hole had a dough some 225 times higher than that of our sun. Until now the most massive had been “alone” 140 solar masses. It was in 2021, the GW190521 signal. Estimates indicate that the 2023 signal was the result of the collision between a black hole of 100 solar masses with one of 140 solar masses. That is, only one of the black holes was already as massive as that of the fruit of the largest shock detected so far. From this event not only highlights its magnitude, but also the fact that the speed of rotation of black holes was surprisingly high. A new enigma in heaven. All this planet an important unknown for the team. As they explain, the holes of such mass cannot be formed from the death of a star, at least based on what contemporary physical models say. The only way we know can be formed is through the fusion of smaller black holes. LVK. In 2015, the Ligo experiment made history detecting for the first time the clash of two black holes through the expansion of gravitational waves associated with such a violent event. This pioneering experiment has been company in Europe and Kagra for years (Kamioka gravitational wave detector) In Japan. Together they have already detected more than 300 clashes between black holes. The details of the study They have been presented In the 24th International Conference on General Relativity and Gravitation (GR24) and 16th Conference Edoardo Amaldi on gravitational waves, a joint conference held this week in Glasgow, Scotland. Not so easy to observe. The detection of GW231123 “pushed the limits of both gravitational wave detection technology and current theoretical models,” says the responsible team. Analyzing these types of events through gravitational waves is not easy, but knowing more about them can help us unravel some key mysteries of the cosmos. “Black holes seem to turn very quickly, almost to the limit of what is allowed by Einstein’s theory of relativity,” explained in a press release Charlie today, co -author of the study. “This makes the signal difficult to model and interpret. It is an excellent case study to push the development of our theoretical tools.” Looking for the midpoint. Theoretical tools that perhaps help us reveal the secrets of the elusive black sized black holes. Today we do not know very well how these holes are formed whose mere existence implies the certainty that we still do not know about our universe. In Xataka | What happens if you fall into a black hole, explained in a simple way in an overwhelming NASA simulation Image | POT

China’s domain is spreading far beyond rare earths. Even where the US had no rival: the sea

While the United States is has launched yet to the search of those minerals and rare earths that China governs well above the rest of the planet, even with the pentagon and the Apple very Inverting a stratospheric sum, Beijing has been adding and building A small empire that begins to make many nations nervous. To Japan and Taiwan, who believed the seas as nobody: Washington. Maritime ambition. In a context of growing strategic rivalry with the United States, China has intensified their Naval operations long range as part of an explicit demonstration of its global ambition. Already We tell it: Between May and June, the aircraft carriers Liaoning and Shandong They carried out combined exercises in waters near Japan, operating beyond the so -called “First Islands Chain” and entering the “Second Chain”, including Guam in Equation, an important military enclave United States. Nerves The presence of these two aircraft carriers in the Western Pacific not only caused Concern in Japanbut also revealed the New scope of the Chinese Navy, which seeks train their units To operate independently, far from the continental coasts, both in peace and war times. The ability to perform air operations from ships in open sea (including Removal and landings of fighters and helicopters up to 90 times a day) provides China an operational experience that, although still incipient, anticipates a future use of these assets as force projection instruments beyond their immediate influence areas. Shandong Inroads under construction, in 2019 Aircraft carrier as a message. Beyond its military utility, Chinese aircraft carriers represent a powerful status symbol international. For the Government of Xi Jinping, the possession and deployment of these ships constitutes an affirmation that China has left behind the limitations of a regional power and progressly advanced towards the image of global power. Even though Three Chinese aircraft carriers current (the liaoning, the Shandong and the still inactive Fujian) operate with conventional propulsion and are below technologically of the Eleven nuclear aircraft carriers From Washington, his exercises are promoted in official media as an unequivocal signal of the country’s maritime rebirth. And one more when falling. In addition, the possibility that The fourth carriercurrently under construction, use nuclear propulsion and electromagnetic catapults indicates a gradual but ambitious evolution. Plus: The recent opening to the public Shandong in Hong Kongafter completing their maneuvers, reinforces that nationalist propaganda approach aimed at strengthening the legitimacy of Chinese leadership through military power. CNS FUJIAN Dispute for the Pacific. China’s aircrafts not only serve for training or to project distant influence, they also constitute a Operational tool Within the framework of Territorial disputes Activated in the Sea of South and Eastern China. Analysts agree that Beijing could use them to reinforce your claims in front of Japan, South Korea or Southeast Asian countries, or even to exert coercive pressure on Taiwan through A maritime block that prevents the flow of goods and communications. Although in a direct conflict with the United States the aircraft carriers would be vulnerable to missiles and torpedoes (and would probably have a limited role in a immediate confrontation by Taiwan), its value lies in the control of broad areas, surveillance, political intimidation and support for combined naval operations. As He pointed out A Japanese academic to NYT, these platforms allow pressure on both military and civil vessels, becoming a hybrid instrument of economic and military coercion. Evolutionary logic. From the Strait crisis from Taiwan in 1996, when the United States deployed two combat groups Of aircraft carriers to deter Beijing, China understood the need to develop its own naval response capacity. The starting point was the acquisition of the helmet of An old Soviet aircraft carrier In Ukraine, converted into the Liaoning and incorporated in 2012. Since then, the advance has been progressive but constant. The Shandong, released in 2017was the first built entirely in Chinese shipyards, while The Fujianeven in the test phase, it incorporates for the first time a system of Electromagnetic catapultkey technology to operate heavier and better armed aircraft. A long way. Despite these advances, experts like Narushige Michishita They warn in the New York Times That Chinese naval operations are still in a rudimentary phase, marked by a slow but disciplined learning curve. China prefers to avoid expensive errors and seeks, however, consolidate a coherent maritime doctrine and functional that allows, in a few decades, to compete from you to you with the great naval powers of the world. The Indo-Pacific Theater. Plus: the simultaneous display Of the Liaoning and Shandong in deep waters, it has a double value: it allows the Chinese fleet to operate in unknown environments and reinforces its capacities for future intervention scenarios in critical areas, such as the Indian Ocean, the Persian Gulf or even the Mediterranean. According to him Timothy Heath researcher of the Rand Corporation, the aircraft carriers will offer China the ability to project aerial missions in any balloon area Where your Navy sails, beyond the only foreign base that currently maintains in Yibuti. In that sense, the control of routes to the Middle East or the Strait of Malaca, vital for Chinese economic and energy interests, will probably be one of the Strategic objectives in the medium term. A symbols war. I remembered the Times that, as Beijing builds More warshipsconsolidated alliances with African countries and reinforces its port diplomacy in Asia and Africa, the Indo-Pacific converts On the board where a new naval power competition is outlined, with the aircraft carriers as a tool of that Geostrategic ambition. While the aircraft carriers do not guarantee maritime domain (especially in front of a power with Interdiction capabilities as the United States), its value lies both in its operational function and its symbolic weight. In other words, Beijing is no longer satisfied with defending their coasts, but with drawing routes on waters that, until recently, only dominated Your main rival. Image | RHK111, Tyg728, Ministry of National Defense The People’s Republic of China/ Li Gang/ Xinhua In Xataka | China … Read more

150 years ago we found a lot of rivets in a funeral mound. It turned out to be Norway’s biggest Viking ship

From series for all ages as’Vivky the Vikingo‘o The raw’Vikings‘, movies like’THE WARRIOR Nº13‘ either ‘How to train your dragon‘And video games like’Assassin’s Creed Valhalla‘ either ‘The Banner Saga‘, the Vikings have resisted fashions and the passage of time. And one of its most recognizable elements are its ships. They continue to cause astonishment And, among all, there is one that we discover by chance and turned out to be the king of the sea viking. The Myklebust. The finding. That mysticism and that it seems that they do not go out of style, contrasts with the barely 300 years that the Viking era lasted. Speak well of his legend, and ships like the Myklebust They are an essential part of it. Centuries after his era, in 1874, archaeologist Anders Lorenge gave some strange remains on a farm west of Norway. They were inside Randehagjen funeral moundon the Myklebust farm, and among many other things, he found a lot of rivets of a ship. Unfortunately, everything in quite a bad condition because the ship was buried after being cremated, which caused him to live in the shadow of other ships such as the Gokstad or the Oseberg that were found in perfect condition. But, over the years, we have been able to train more than an idea of how this king of the seas was. Ship? Cruise. As the excavations were carried out, the researchers found more rivets until they add about 7,000. Taking into account both the amount and their size, it is estimated that the Myklebust came to measure about 30 meters. And the estimate is not only based on the rivets, but on a very specific piece of the shields of the Vikings: the Umbo. This is the central circumference of the shield, which was probably placed along the ship next to the corresponding soldier/rowing. 44 umbos were found, indicating that, at least, there would be 22 shields per side. The Vikings had several ships, but those who entered combat were mainly three. On the one hand, the Karvia small ship of about 20 meters for the expeditions near the coast. On the other, the SNEKKEa great transport of about 30 meters designed for oceanic navigation and the transport of troops. Finally, the Drakkar. The size of these varies, but the Myklebust would fit into its description as a little draft ship, numerous oars and the bow with the dragon’s head. They were the most versatile ships because they were maneuverable, but with a large load capacity of warriors. Sagastad Museum with the replica of Myklebust and its sea access ramp Cremation. Due to its dimensions, the Myklebust was a symbol of power and had to terrify to see it on the horizon if it was not of yours, and in addition to its size, it had to belong to someone high. The reason why the pieces were very damaged is because the ship was buried after being cremated. In Vikingas tombs, the complete cremation of the ship was a strange and reserved practice only to the most powerful, like a king (it is speculated with Audbjørn de los Fjordos). In addition to the trousseau, jewelry, various objects and some hunting, the deceased needed a ship for his last trip to Valhallaand the Myklebust was that last means of transport. Returning to the seas. We do not know if its owner arrived at Valhalla, but what we do know is that the Myklebust has been furrowing the Norwegian waters for a few years. In Nordfjordeid is the Sagastad Viking Centera museum and attraction focused on the dissemination of Viking culture. It has several exhibitions, but the one that attracts more looks is the Myklebust room. In it, there is one Real scale recreation And with everything of detail of the war ship that can also navigate. The work began in 2016 and ended in 2019, and each spring opens the gate of that part of the museum so that the spectacular ship is dragged a few meters until it comes into contact with the sea. It is then that he undertakes a journey through the fjords, in an event that highlights the magnificent figure of this type of ships. But that replica can fall short if objects are still discovered on the site. A 2024 analysis showed more objects in the mound, such as a bronze ring and what can be more umbos, so perhaps we would have to rethink the expanding the drakkar for future tributes. Imnágen | Sagastad, IslandmenFjord Norway In Xataka | How can we know that there was a Vikingo cutting firewood in the Newfoundland of the year 1021: Punta technology, three pieces of wood and a cosmic coincidence

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