thought

Renfe thought of France as its great business for the future. Already looking at Portugal thanks to a 19th century decision

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“Portugal is a great opportunity for Renfe.” These are the words that summarize the company’s intentions for the medium-term future, according to Expansion. The newspaper assures that the Ministry of Transportation aspires to turn the neighboring country into the company’s new big business. And the secret is in its track width. “A great opportunity”. “Portugal represents a great opportunity for Renfe. With the 15 units of the Series 106, it will have 30 high-speed trains of variable gauge to which the 13 compositions of the new Series 107 will have to be added in the coming months. In total, 43 trains that are also intended to be approved for circulation in Portuguese territory.” These are the words with which, according to Expansionthe Ministry of Transport defends the change in strategy outside the Spanish borders. The company has been looking for a place in France for some time but This country is putting up all possible barriers to hinder its expansion through French territory. The alternative now passes through Portugal and the gauges have a lot to do with it. The Avrils. At the beginning of July, Talgo and Renfe reached an agreement regarding their Avril trains. These trains have been a headache for Renfe because Talgo has delivered them late, they have presented numerous breakdowns and incidents and they even had to be removed from Madrid-Barcelona because they cracked. The great theoretical advantage is that they are trains that, with the necessary equipment, can jump between the Iberian and international gaugethe European standard for high speed. This allows them to be the only trains that operate the Madrid-Galicia without the need to transfer between trains. This gives it a strategic advantage over Ouigo and Iryo in the face of the upcoming liberalization of these routes. In the agreement, Renfe and Talgo decided that the Avril trains that operate with international gauge were going to be adapted to be able to make this track jump. The cost exceeds 130 million euros but it will allow Renfe to move its trains throughout the national territory… or the entire Iberian Peninsula. A strategic change. With the announcement of this agreement, from the Ministry of Transport they indicated that “Renfe “It will be the only operator with the capacity to provide international high-speed rail services with Portugal, which gives it a clear competitive advantage to lead the Iberian train market.” The phrase is not coincidental. The initial intention was to dedicate some of the trains received from Talgo to France, but the company is encountering so many problems in homologating them that it has shifted its projection to Portugal. And the Portuguese country seems to be a perfect market for the company taking into account its track widths. And the connection between Madrid and Lisbon, which should be completed in 2030 but reach minimum travel time in 2034it has to be built under instructions from the European Union using international gauge. However, the Lisbon-Porto line is being built with Iberian gauge, which limits the Madrid-Lisbon-Porto connection to a single train. The Iberian exceptionality. The situation is complex. The Portuguese railway, like the Spanish one, grew around the Iberian gauge. This isolated both countries from the rest of the continent in this sector but the European Union is working so that the exceptionality is, in part, eliminated. That is why in the agreement reached in October 2025 there is the obligation to bring the international width to Madrid-Lisbon. However, nothing has been said of the high-speed line that Portugal is building between Lisbon and Porto. This line is supported by Iberian gauge and will reach the Spanish border with said gauge. This makes it very difficult for new companies to enter.as we have seen in Galicia. But Renfe has the ace up the Avrils’ sleeve. And since these trains can jump between gauges, Portugal opens up as a very attractive market to expand operations, with trains that can cover Madrid-Oporto passing through Lisbon. Something that no other company in the world can do right now.. Photo | Annie Spratt and Nelson Silva In Xataka | Spain aspires to its most ambitious railway challenge: Madrid-Barcelona in less than two hours. And you have already taken the first step

Meta thought it was a good idea for its AI to generate images from your Instagram photos. Days later he has already turned back

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Last week Meta launched Muse Image and Muse Video, its new AI models integrated into the Meta AI app. However, the launch was quickly overshadowed by the criticism he received one of the functions of the image generator. Within Muse Image, in addition to writing the normal prompt, Meta thought it was a good idea to let us tag other Instagram users to Generate images from your photos. All you have to do is type the at sign with your username and Muse Image can access your profile to create any image you can think of. The problem with all this is that Meta activated it by default for all public Instagram accounts, without warning or of course asking for permission. If you wanted to prevent anyone from tagging youyou had to manually disable it from your account settings. Meta backs off: they will no longer be able to tag us in Muse Image Muse Image was announced last Tuesday, July 7, and in the following days the criticism of this decision began to accumulate. Four days later, on Saturday the 11th, Meta issued a statement in which They responded to the controversy. According to Meta, their intention with the tagging feature was to “offer a useful creative tool” and “give users control over whether their public content could be mentioned.” The best way to give control to users would have been to let us activate it if we wanted to be tagged and not the other way around. Meta has confirmed that The labeling function has been removed. This is the full statement: Earlier this week, we announced that one of the ways users can generate images in Meta AI is by @-tagging the public Instagram accounts they want to reference. Our intention was to offer a useful creative tool and give users control over whether their public content could be mentioned in this way. We’ve received feedback that this feature missed the mark and is no longer available. Image | Meta, edited with Magnific In Xataka | Meta has a long history of privacy scandals. We can add one more to the list

Switzerland thought that putting 5,000 solar panels at 2,500 meters above sea level was crazy. He had an unexpected ally: the snow

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The logic of the solar sector tells us that the panels should go down, where it is hot and the roads reach without problem. It shouldn’t be a good idea to put them on top of a mountain, but a project in the Swiss Alps it has surprised us with extraordinary performance. The curious thing is that what drives his performance is exactly what many assumed would make him fail. A solar farm in an unexpected place. The installation is called AlpinSolar and is located on the dam of Lake Muttsee, in the Swiss canton of Glarus, one hour from Zurich. This construction is located at 2,500 meters above sea level and is the highest dam in Europe, as well as the longest in Switzerland. Panels everywhere. Some 5,000 bifacial solar panels, manufactured by the Swiss company Megasol, cover more than a kilometer of the dam wall, facing south to capture sun from morning to night. Being an inclined surface, the snow slides alone without the need for manual cleaning. A complex installation. The dam is inaccessible by land, so every panel, every piece and every tool had to be transport by helicopter. For example, the crane that helped install the panels, and whose components were moved there to then be assembled and ready to operate. Megavarious out of nowhere. The plant, operational from 2022, has an installed power of 2.2 MW and generates about 3.3 million kWh per year, enough to supply between 700 and 750 homes according to various sources. damn fog. The Alpine country generates plenty of electricity in summer, but the same does not happen in winter, which is exactly when it needs it most. That deficit could worsen significantly if Switzerland starts to close its nuclear power plants, and alternatives such as wind energy, have had difficulties developing there. Traditional solar doesn’t help much either: a panel in the valley only generates a quarter of its normal output in winter, in part because fog can sit in low-lying areas for weeks. Better up than down. The curious thing is that the idea of ​​installing the solar farm at high altitude turned the situation around. The plant is above the fog line, and the thin, clean air lets in more sunlight. The cold, far from reducing performance, helps: solar panels work more efficiently when they are not overheated. And the snow acts like a giant mirror, reflecting additional light onto the panels from below (albedo effect), which can boost production. Surprise. AlpinSolar generates about half of its entire annual production during the winter, exactly the season in which the country needed it most. In fact, it produces up to three times more than a similar plant in low altitude areas during the months of February and March. That was enough argument for the Denner supermarket chain to sign an agreement 20-year energy purchase agreement with the project in an alliance with Axpo and IWB, builders and developers of the project. To copy the project. The result has also ended up convincing the Swiss government, which approved a fast-track law dubbed “Solar Express” to facilitate the development of new projects that effectively leave AlpinSolar behind. Among them stands out an alpine park near Sedrun in which up to 4,200 solar projects are planned to be built in lowland and mountain areas of the country. Austria, Italy and other countries are following the experiment closely. That and othersby the way. Image | Axpo In Xataka | The wind industry has been dreaming for years of a turbine that can be assembled without concrete or machinery. France has said ‘hold my tank’“

We have had a nautical chart for almost two centuries in a drawer because we thought it was all wrong. we were wrong

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Sometime in 1835, on the northwest coast of India, Alexander Burnes purchased a roll of paper. Inside was a handwritten navigation chart of the Red Sea and the Gulf of Aden that the British officer came to describe as a “specimen of naval survey without equal in the cabinets of Europe.” Burnes donated it to the Royal Geographical Society, where a team of experts examined it and put it in a drawer. Since then, the diagnosis has been unanimous: the letter was very beautiful and very attractive, but completely wrong. For 189 years, we have believed it was wrong. But we were wrong. And it’s not that we hadn’t studied it. In the last century alone it has been studied in detail on up to five occasions (1947, 1987, 2002, 2012 and 2022). However, all efforts had been futile. However, in recent years, John P. Cooper of the Institute of Arab and Islamic Studies at the University of Exeter and his team They have studied the subject in depth. Without much success, really. Until they realized one thing: what if instead of a document, what they had in their hands was a tool? I mean, what if it wasn’t a map to hang on the wall, but something else? How did the thing work? The key, always according to the researchers, is that the letter was only opened to the section that the navigator was using at that time. If you look at the map as a whole (more than 180 islands, plus reefs, land landmarks, religious buildings and flags), you don’t understand; above all, because they do not have continuity. But if you analyze the references fragment by fragment, the idea emerges that it was used to maintain the navigation line, to remind the sailors what they had to do. Its purpose was mnemonic and operational; not representative. How curious, isn’t it? Yes and that is the main problemto think that all this is just ‘curious’. But no, what the letter puts on the table is the Eurocentric bias that still prevails in the history of science: For almost two centuries we judged an Indian tool by the only yardstick we knew (the geometric correspondence to the terrain) and declared it “defective” for not meeting that yardstick. How many thousands more things will we have out there lost, without fully understanding? It never hurts to remember that there are many things that we do not fully understand. Image | University of Exeter In Xataka | Urbano Monte’s world map, one of the most amazing and grandiose cartographies in history

We have just discovered that the lethal weapon to hunt mammoths was not what we thought

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More than a century ago, archaeologists were convinced that the so-called Piltdown Man It was the “missing link” in human evolution. It took more than 40 years to prove that it was a fraud built with a human skull and the jaw of an orangutan. Since then, archeology has learned an uncomfortable lesson: even theories that seem indisputable can crumble when new evidence appears. The great certainty that falters. For decades, archeology books have presented the Clovis culture like the great mammoth hunters of North America. The image was simple: groups of hunters armed with spear propellers, known as atlatlcapable of taking down huge animals from a relatively safe distance. However, two studies published recently They question this reconstruction and force us to reconsider one of the most iconic scenes in American prehistory. The weapon that never appeared. He first study puts the focus on the atlatl, that kind of extension of the arm that multiplies the speed and range of a spear. For years it was assumed that the Clovis used it to hunt mammoths, although there was a surprising detail: A single atlatl has never been found at a Clovis site. Using statistical models, researchers they conclude now that this technology probably did not appear in America until about 4,000 years later before this culture disappeared, a gap too great to continue supporting the traditional theory. Without direction. The consequence of this archaeological gap is so striking that the author of the study, the archaeologist Metin Eren, summarizes it with a sincerity unusual in a scientific article: “We have no idea what the hell they used.” Because if the Clovis did not use atlatls, only hypotheses remain. Perhaps they hunted with javelins or thrust spears, which would have forced them to get much closer to animals weighing several tons and take an enormous risk. Paradoxically, the more research is done on one of the best-known cultures in America, there are fewer certainties about the weapon with which he survived. Or they were not so “hunters”. He ssecond study takes that review even further. After analyzing the fifteen sites where Clovis points have appeared along with remains of mammoths, mastodons or gomphotheres, the researchers they conclude that none demonstrates unequivocally that these animals were killed by human beings. The same marks on the bones and the same broken tips can occur both after a hunt and when using the carcass of an animal that had already died, a problem known in archeology as equifinality. Hunters… or scavengers. Of course, the authors do not maintain that the Clovis never hunted mammoths. What they affirm is that current evidence does not allow us to rule out that, on many occasions, they acted rather as opportunistic scavengers. In fact, remember that a Clovis point has never been found embedded in a mammoth bone, evidence that does exist in much older Eurasian sites. They even reinterpret a famous isotopic study on a Clovis child, proposing that the elevated nitrogen levels could be explained due to the consumption of larvae coming from corpses and not necessarily from a diet based almost exclusively on mammoth meat. Archeology exchanges certainties for questions. Both jobs They reflect a change of trend in research on prehistory. For decades, it was enough for an explanation to be reasonable to become the dominant narrative. Today researchers demand much stronger evidence and are revising some of the ideas that seemed best established, from the weapons used by the first Americans to the role they played in the disappearance of the megafauna of the end of the Ice Age. Sometimes the greatest scientific advance is not in finding a new answer, but in recognizing that the old one was never there. really proven. Image | BioS. In Xataka | The company that is resurrecting the mammoth is creating the Noah’s Ark of the 21st century. And he is doing it in Dubai, of course In Xataka | The crater known as “the door to hell” hid a surprise: a 50,000-year-old mammoth calf

The Milky Way is 10% larger than we thought, and we have discovered it by looking at explosions in other galaxies

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Imagine that you have never left your house. What could you draw better? Your own building or the building across the street? The answer is simple. If we look out the window, we can see the building in front in detail, but we have no idea What is it like where we live?. The same thing happens with galaxies. There is data that is easier to analyze from neighboring galaxies than from the Milky Way. Therefore, for a long time, its appearance has been a mystery and its size a very cursory estimate. Thanks to the Gaia missionfrom ESA, we were able to have the most precise map of our galaxy and, with it, understand its structure much better. We know, for example, that it consists of 4 arms, instead of two, as we used to think. Now, through a collaboration between ESA and NASA, we have also discovered the size of the Milky Way. 10% bigger. NASA and ESA scientists have achieved measure the size of the Milky Way through its two X-ray observatories: the XMM-Newton, of the European Space Agency, and the Chandra, of the American one. This type of observatories have been used because the measurement has been carried out through the analysis of X-rays released by gamma ray bursts in other galaxies. Thus, they have seen that the distance between the two outermost arms of the Milky Way is 10% greater than what had been calculated until now. What do X-rays have to do with it? Gamma ray bursts They are the most energetic explosions in the Universe. Although the rays that give it its name stand out, these explosions are usually followed by an emission in the rest of the electromagnetic range known as afterluminescence. Here X-rays stand outwhich can be measured thanks to the ESA and NASA observatories. These X-rays from neighboring galaxies shoot out in all directions, so some can reach the Milky Way and, of course, also the Earth. In the latter case, there are some that arrive directly and others that arrive after being dispersed by the dust clouds in the arms of our galaxy. Detecting these two types of X-rays is what allows us to determine the size of the Milky Way. The importance of angle. The X-rays that travel directly to Earth are the first ones captured by observatories. Next come those that have been dispersed by the dust clouds. As they come from many directions, in the detectors it is seen as a circle in the center of which are the X-rays that arrive directly and, around them, the scattered ones. Although in reality they are several concentric circles. Each of them corresponds to X-rays that have been scattered at the same distance. In the case of galaxies, from the same arm. With all this, calculations can be inferred that allow us to detect how far some arms are from each other. Until now, only estimates had been made, but in this case the distances have been measured thanks to three gamma ray bursts measured in three of the four arms of our galaxy: Perseus, the outer one, and the outer Scutum-Centaurus. To know the size of the Milky Way you only have to measure the distance between the outermost arms. It was observed that the distance between them and the center is 10% greater than what had been measured until now, so the galaxy is larger than we believed. Far from retirement. So much Chandra as XMM-Newton They were launched in 1999. We might think that they are already outdated, but they continue to give us data as important as the size of the Milky Way. The key is knowing how to use the information they can capture. In this case, the calculations have been based precisely on looking out the window towards the neighbor’s house. Because until now we had not seen that we could draw our own building by observing the shadow on the one in front. Images | Magnificent | ESA/Gaia/DPAC, Stefan Payne-Wardenaar, ESA/XMM-Newton and NASA/Chandra In Xataka | When stars formed has always been one of the greatest mysteries of the universe. And we are closer to solving it

Centuries ago someone thought it was a good idea to paint over a Rembrandt painting. The question is why the devil erased a man with a turban

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The fact that he has been dead for more than three and a half centuries does not prevent him from Rembrandt Harmenszoon van Rijnone of the great geniuses of baroque painting, continue to surprise historians. And in the most unexpected ways. In 2014, one of his youthful works appeared by surprise at an auction held in Cologne. Now, with your attribution already confirmedthe experts in charge of cleaning the canvas have had another surprise: under a subsequent layer of paint they have discovered a man with dark skin, a black beard and a large turban. It was once painted by Rembrandt himself, but someone decided to retouch the figure to turn it into a venerable old man with a white, wrinkled face, gray beard, and a traditional Dutch cap. The question is obvious: Why? Isn’t that a Rembrandt? The painting Let the children come to me It was probably painted around 1627, when Rembrandt was 21 years old. However, it did not rise to fame until almost 400 years later, well into the 21st century. To be more precise, we must go back to May 2014, when the canvas was included in an auction held in Cologne with a fuzzy business card. Its owners presented it as a piece of the “Dutch school” dating back to the mid-17th century and sold it for 1.5 million euros. It was a good pinch, but it ended in pocket change when some time later it was confirmed that in reality that anonymous 125 x 109 cm canvas (with frame) was neither more nor less than a work from Rembrandt’s youth. Recently Sotheby’s he put it up for auction again with an estimated value of between 9.3 and 14 million of euros. The work before the restoration, with the added modifications. And the (other) surprise arrived. Such a record would have been enough to give the painting a prominent place in Rembrandt’s legacy. Recently, however, Sotheby’s revealed that the canvas hid another secret. What we have seen so far was not exactly what the Leiden artist painted, but rather a version adulterated by a hand less skilled with brushes, a contemporary artist by Rembrandt. There are those who even have a name: Claes Cornelisz Moeyaert. Given that experts believe that the Dutch painter left the work “partially unfinished”, working hard on the upper part of the painting and sketching the lower part, it is understandable that someone would want to finish it. The intriguing thing is that in doing so that anonymous hand did not simply follow Rembrandt’s design. In addition to finishing the canvas, he repainted it, erasing, adding and modifying it to taste. We know this because in recent years technicians have studied the work with X-rays and have dedicated themselves to carefully eliminating overlapping layers. Does things change that much? Yes. It comes with taking a look at the photos that were released on the day of the painting and those disclosed by Sotheby’s following the last auction to prove it. The motif of the painting is the same: the biblical scene, collected in the Gospels of Mark, Matthew and Lucasin which Jesus uttered his famous phrase: “Let the children come to me.” If we look closely, however, differences can be seen between its status in 2014 and 2026. The elimination of the repaintings changes the color, has made some figures emerge and eliminated others. A boy in the foreground who was wearing an ocher suit now looks how Rebrandt must have seen him, with his back bare. However the most powerful alteration It is another: we now know that one of the central figures in the scene was a dark-skinned man with a turban who the artist who retouched the work completely modified, turning him into a venerable old man. For some unknown reason, the original exotic turban ended up becoming a red Dutch hat and the black beard became a long, gray beard. The work already restored and as presented by Sotheby’s. More than a detail. That detail has attracted attention of media from half the planet. And it’s normal. There are those who believe that if Rembrandt initially opted for a man with a turban, surely Muslim, it was not for an aesthetic reason. He wanted to capture what he saw in part in his own country in the 17th century, a multicultural environment, marked by religious rivalries, the coming and going of thousands of refugees and the social tensions that this generated in the streets. As remember historian Andrew Graham-Dixon, “in 1627, when Rembrandt began the painting, Leiden was going through a humanitarian crisis.” “The Thirty Years’ War was at its peak and hundreds of thousands of people arrived as refugees in the Dutch Republic,” he adds. It is estimated that in 1626 alone approximately 10,000 refugees arrived in Leiden. …and more than paint. Was that context transferred to Rembrandt’s canvas? Did you want to capture the spirit of what you saw on the streets of your city, the position that in your opinion should be maintained towards refugees arriving from other places? “It depicted a mass scene of Christ welcoming children and families. It was very controversial at the time. There were people in Leiden who did not want to receive them,” Graham-Dixon abounds. “What we gather is that Rembrandt was on the side of humanitarian aid. So I think this is more than just a painting. It’s a statement of his moral stance.” The truth is that in the work we see a crowd in which religion is represented. Jewish and Christian. “It looks familiar”. The figure wearing a turban is not the only surprise. Experts have identified in it a self-portrait of Rembrandt himself, who represented himself at the top, as a young man who appears to be looking at the scene perched on a pillar, although in reality he is looking at us. “His physiognomy is familiar to us thanks to the numerous painted self-portraits, drawings and engravings that he made over … Read more

We thought we had passed the worst of the memory crisis. We were totally wrong

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A new report from the consulting firm Jefferies Equity Research paints an even more terrible picture than we expected for the immediate future of the memory crisis. These components have already risen in price extraordinarily in the last nine months, but wait: it hasn’t ended there by any means. The rest of 2026 will be horrible. According to its analysts, memory prices will experience an increase of between 40 and 50% in the third quarter of 2026 compared to the current quarter. But the increases will not stop there, because in the fourth quarter, between 30 and 40% price increases are expected compared to the third quarter. Let’s do the math. According to this prediction, the prices of memory modules for our PCs will be absolutely exorbitant: 16 GB DDR4 module: the current price is around 139 euros. Applying these increases, in the third quarter this product will cost up to 209 euros in the third quarter, and up to 292 euros in the room. 16 GB DDR5 module: the current price is around 240 euros. Applying the same percentages, in the third quarter we would pay up to 360 euros for it, and in the fourth quarter up to 504 euros. Bad for (almost) everyone. These increases will therefore make prices much worse than they are now, and although we have given the example of memory modules for the PC, this problem extends to all types of electronic products that have this component. Mobile phones, tablets, graphics cards, Smart TVs, routers, consoles (Hello Steam Machine) or cars will also be affected, and this could therefore significantly impact the future prices of these products. Let them tell Apple: we could see how this and other companies are forced to raise prices again. 2027 will be bad too. This report also reveals that the crisis will persist in 2027, although the growth curve will reduce slightly: increases of between 40 and 45% are expected from year to year. It is a very bad figure, but not as bad as what is expected for this second half of 2026. Why does the crisis last so long?. AI is to blame for this memory crisis, and what is happening is that manufacturers are not only unable to cope: the “little memory” they are manufacturing is being reserved for long-term contracts. Micron, for example, has already signed 16 strategic contracts with large firms and hyperscalers, and in the global market 50% of what is manufactured is already reserved for those large clients. That percentage could rise to 70%, they say at Jefferies, which will make it even more complicated (or rather, more expensive) to access memory modules for PCs, laptops, consoles or mobile phones. The end of the crisis, in 2028? This analysis also indicates that 2028 could finally see prices begin to fall slightly. The reason: a slowdown in demand and a slight increase in supply of between 15 and 20%. China manufacturers won’t save us. He Chinese manufacturer CXMT it seemed the great hope for consumers, but as seen at Computex, their prices they are similar to those of Micron, Samsung or SK Hynix. Apple is trying to work with that Chinese firm and is pushing for the US I took it out from your “Entity List”, but it remains to be seen what will happen. The only advantage of this and other Chinese manufacturers such as YMTC is that they do have modules in their inventory, but most are intended for domestic consumption by Chinese firms. In Xataka | Samsung had been the absolute king of technology in South Korea for decades: SK Hynix has just surpassed it

We thought “cotton candy planets” was a metaphor. NASA just found two that take it to the limit

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In a very distant planetary system, about 1,113 light years from Earth, intuition asks us for a very reasonable thing: if a planet is almost the size of Jupiter, it should also resemble Jupiter in its mass. NASA’s TESS mission just showed that the universe doesn’t always play by those rules. From your data, scientists have identified two giant worlds around the star TOI-791 that seem made to break that expectation: they take up a lot of space, but concentrate very little matter. The discovery has its own names: TOI-791 by TOI-791 c. They are two “super-puff” planets, a term used to describe giant worlds with extremely low densities, comparable in this case to that of cotton candy. Scientists calculate that they are the most “bloated” planets found so far, a striking label but supported by a very specific comparison: their size is close to that of Jupiter, while their mass represents only a small fraction of that of the largest planet in the Solar System. The key piece of this story is TESSNASA’s Transiting Exoplanet Survey Satellite. We are not talking about a telescope designed to obtain direct images of these worlds, but rather a space observatory prepared to monitor large areas of the sky looking for indirect signalss. According to technical information, its payload is concentrated in a single instrument: a set of four wide-field optical cameras. These cameras work together with their covers, mount, sun shield and data management unit to track stars for long periods. Two giant planets that weigh almost nothing The important thing is that TESS did not see those planets the way we see an image of Jupiter or Saturn. What it detected were repeated small drops in the brightness of TOI-791, the Sun-like star that hosts this system. This pattern appears when, from our perspective, a planet passes in front of its star and blocks a minimal part of its light. From these transits, and how they repeat over time, scientists can reconstruct the presence of worlds that are too far away to be shown as a conventional photograph. There’s an understandable trap here: we see the NASA illustration and our brain fills in the scene as if we were looking at a photo. But that is not what has happened. The agency clarifies that no direct image of TOI-791 by TOI-791 cand that its appearance in the visual pieces is an artistic interpretation. The image serves to bring us closer to the discovery and compare it with known planets, but it is not the observation itself: the observation is in the signals measured by TESS when these worlds pass in front of their star. The TESS spacecraft and its payload, prepared before launch The rarity appears very clearly when the figures come in. TOI-791 b is almost the same size as Jupiter, but contains only 3.0% of its mass. TOI-791 c goes even one step further: it is larger than Jupiter, although it barely reaches 5.9% of its mass. That combination is what makes these worlds so strange. We are not dealing with small planets with little matter, but with giants that take up a lot of space and yet concentrate a surprisingly low amount of mass. There is also a question of patience. TOI-791 b takes 139 days to complete one revolution around its star, and TOI-791 c needs 232 days. For a telescope that searches for planets through transits, that means waiting a long time to see the same signal repeat and confirm that we are not facing a coincidence. The accumulation of data was decisive here: from its high orbit around the Earth, TESS gathered 1,122 days of observations of this system over seven years. The image compares the size of the two “super-puff” planets with some worlds in our Solar System To arrive at their masses, scientists took advantage of a very useful detail: these two planets do not move as if the other did not exist. TOI-791 b and TOI-791 c follow an orbital pattern that causes them to be gravitationally attracted to each other. That push and pull slightly changes the timing of its transits across the star from our perspective. By measuring these small temporal variations, the team was able to estimate how much mass each planet contains and confirm their status as low-density “super-puff” planets. The confusion comes not only from the fact that they are huge worlds with very little mass, but also from the fact that they fit poorly with what was expected to be found. Jon Jenkins of NASA Ames sums it up this way: “They represent a puzzle “We must solve how giant planets like Jupiter and super-puffs form.” George Dransfield, lead author of the study at the University of Oxford, also emphasizes that their extremely low densities make them fascinating targets for studying the evolution of planetary systems. The metaphor, in fact, was the gateway to the problem. What comes next is trying to read those worlds in more detail. NASA notes that scientists want to study the chemical composition of their atmospheres, how their rotation can affect their shape and to what extent the star’s inclination fits with the orbits of the planets. It also remains to be understood how they moved within the system during its development, whether their orbits were shaped by interactions with other planets and, ultimately, how such low-density worlds can form. Cotton candy was the image; The challenge is to explain the recipe. Images | POT In Xataka | Experts warn: NASA launch facilities are too old to travel to the Moon

We thought that Ozempic was only good for losing weight. Its last side effect is a brake on violent impulsivity

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If there is a family of medications that has made headlines in recent years, it is the GLP-1 receptor agonists, although they will probably be more familiar to you if we say ‘Ozempic‘ either ‘wegovy‘. These drugs began by revolutionizing the treatment of type 2 diabetes, but it was all a very effective way to ‘treat’ obesity. But soon after, scientists began to notice something fascinating when they saw that patients said they also lost the desire to drink. alcoholsmoking or nail biting. After investigating it. A new studyor have taken these first indications of the suppression of impulses one step further, entering the field of crimonology and have seen that it can be a way to reduce violent crimes. To reach this point, the researchers analyzed, through a survey, 821 adults who had used GLP-1 drugs at some point. After this, the study separately analyzed current users of these medications with former users to see exactly the effect the medication can have on points that go beyond food consumption. The results. What they found is not that Ozempic “reduces crime,” but something much more subtle: in current users, the association between impulsivity traits or alcohol consumption and violent behavior was significantly weaker. That is, the drug seems to act as a buffer, since in an unmedicated person, high impulsivity combined with alcohol consumption is usually a cocktail that facilitates aggressive behavior, since something that is well proven is the relationship between alcohol and violence. But in patients under treatment with Ozempic, this transition between “feeling the impulse” and “executing the violent action” seems to be attenuated, which could prevent the transition to committing a crime of intent. Because? To understand why a metabolic drug could have behavioral effects, we have to look at the brain, since GLP-1 agonists act on brain areas involved in the reward system and appetite regulation. The clinical context of this phenomenon is increasingly documented, since a randomized, double-blind, placebo-controlled trial published in JAMA Psychiatry demonstrated that semaglutide reduced craving and several drinking metrics in adults with alcoholism disorder. This medical trial has much greater causal weight than the criminological study and provides a solid clinical basis by pointing out that GLP-1 modulates our relationship with substances and immediate gratification. With violence. With all this we can make it clear that, if on the one hand alcohol is reduced and on the other the impulsivity felt when thinking about committing a crime, indirectly two of the main catalysts of violence are being reduced. The small print. With these types of findings, it is easy to fall into sensationalism and think that we are facing the ‘Clockwork Orange’ pill. However, it must be emphasized that the published study is observational and cross-sectional in nature. This means that a kind of ‘still photo’ of the situation has been taken without following up on the participants to see how their impulsivity evolves over time. Images | David Trinks In Xataka | We thought Ozempic was only for weight loss. Science is seeing that it can end alcoholism

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