finally

We’ve spent years unraveling a signal from space that shouldn’t exist. And finally we have a “Rosetta stone” to decipher it

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It was the year 2018 when a team of Australian scientists detected a strange radio signal in the plane of the Milky Way. The radio pulse was too slow for any known astronomical object. It seemed more like some kind of anomaly or error in the telescopes than a new discovery. However, in 2025 another similar signal was located. And then another and another. Currently, there are at least 12 of these signals recorded, which have been named long-period radio transients (LPTs). Each of them includes a new feature that makes it impossible to find a common thread. Or at least it had been that way until now, since a new group of Australian researchers has located a sign that brings together several of the pieces of the puzzle. It has been so useful that it has been colloquially dubbed a space Rosetta stone. All the pieces together. The signal located in 2018 (although it was published in 2022) occurred every 18.18 minutes. With this periodicity, a star in the Milky Way increased its brightness for 30-60 seconds, and then decreased it again. Later a similar phenomenon was located, in which it was possible to see further. A binary system consisting of a white dwarf and a red dwarf was identified. The interaction between the two produced the emission of radio waves. However, when another LPT was detected, the emissions were not radio waves, but X-rays. How was a single phenomenon going to be defined if each one was different from the previous one? The key, finally, has been another LPT, initially located by the ASKAP telescope, of the Commonwealth Scientific and Industrial Research Organization (CSIRO). With it, and with the collaboration of other telescopes, a binary system composed of a white dwarf and a red dwarf has been identified, whose interaction gives rise to a periodic change in brightness, accompanied by the emission of radio waves and X-rays. All in one. With all the pieces, it has now been possible to reconstruct the event. Four telescopes to reconstruct history. The new LPT has been named ASKAP J1745-5051. It is not possible to know exactly how far away it is, although estimates place it between 1,300 and 30,000 light years away. Observations made with the ASKAP radio telescope made it possible to locate a periodic emission of radio waves every 81 minutes, which corresponded to a possible LPT. In order to check if the rest of the conditions that had been observed individually were met, it was observed with three other telescopes. On the one hand, space telescopes Swift and Einstein Probewith which X-ray emissions were detected. On the other hand, with the Southern Astrophysical Research Telescope (SOAR). With this, a binary system composed of a white dwarf and a red dwarf that orbit each other with a period of 81 minutes was identified. Everything fits. The full story. The conclusion when putting all the pieces together is the following. On each orbit, the white dwarf, which has a large mass concentrated in very little space, gravitationally attracts the red dwarf and extracts material from it. This is channeled by the magnetic field of the white dwarf itself until it reaches its surface, where it collides, producing a temperature increase of millions of degrees Celsius. Furthermore, this very violent interaction causes the release of energy in the form of X-rays. On the other hand, the gas accelerated by the colliding magnetic fields of both stars is what appears to produce the radio signals. A Rosetta Stone. The principal investigator of this new study It’s called Kovi Rose. We might think that this has had to do with the fact that the discovery is referred to as a space Rosetta stone. And maybe it has had a little influence, but the reality is that there are more reasons. The original Rosetta stone It was a fragment of Egyptian rock in which there was a text written in three different languages: ancient Greek, hieroglyphics and demotic writing. Because archaeologists of the time knew how to speak Greek, they were able to use it as a basis for understanding hieroglyphs. One language allowed them to reconstruct another. In this case, the new discovery is also in three languages: radio waves, detected by ASKAP, X-rays, with which Swift and Einstein Probe work, and visible light from SOAR. Three languages, three pieces that, when read together, can help to understand the whole much better. With this Rosetta stone, the authors of the study hope to be able to unravel many of these mysterious signals from the Universe. Image | Hans Hillewaert (Wikimedia Commons)/Magnific In Xataka | We believed that the pyramids of Giza did not hide any more secrets. we believed wrong

The time since 1940 has changed a lot. We finally have a time machine to see it on an interactive map

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I was born on a Monday in September at noon and, obeying the tradition of the San Miguel summer, the weather was mild and sunny even though October was just around the corner. I know this because my mother has told me a lot of times, but today I also just confirmed it. And be careful, finding out the weather of a day in the 80s was not a priori as easy as knowing what it was last year: it normally involved resorting to scientific databases or finding paper records, which are already old. The good news is that there is a free tool, accessible from any browser and moderately intuitive so that anyone can know what the weather was like on any day (and any time!) from today until 1940, from your date of birth to your wedding or a trip. The not so good news is that it is the best test to see how time is changing due to climate change. His name is Weather Replay and in a few words it works like a meteorological time machine in the form of a weather visualization web application. Behind this website there are two top-level European projects: on the one hand Copernicus Climate Change Serviceintegrated into the EU space program and with the aim of offering rigorous climate data available to everyone. On the other hand, ECMWF, the European Center for Medium-Range Weather Forecasting, the world reference body for numerical weather prediction. Weather Replay Home Screen The climate time machine starts in 1940 The first screen says roughly what it does: you choose a date and time, use the box at the bottom left to write a location and from there you can see a 48-hour animation where the atmospheric conditions of that specific moment are reproduced: temperature, wind, precipitation, pressure and a few other variables. Everything is very visual and available in a few seconds, without installing anything or registering. Layers are a key element to learn more information. Weather Replay Although there is an initial tutorial that may be interesting to follow, the buttons and their function and the legend are easy to understand and despite its simple appearance, it is quite powerful and with practical options to only have what interests us such as zooming, modifying colors and levels or layers. An especially interesting function is being able to compare the time on two specific dates. Swipe left and right to see what the weather was like on two days from 1940 to today. Weather Replay Under the hood of this comprehensive interactive map is ERA5, the ECMWF global atmospheric reanalysis that continuously reconstructs the state of the atmosphere using real data from satellites, sounding balloons, ocean buoys and weather stations with high-resolution numerical models. Thus, it covers the entire Earth with a mesh of about 31 kilometers and 137 vertical layers up to 80 kilometers in altitude. Despite the huge amount of data it handles, the simulations and management are agile thanks to the fact that it is in the cloud DANA Floods of 2024. Weather Replay Beyond tinkering and satisfying curiosity, this tool means that anyone has access to 80 years of atmospheric data in an intuitive and graphic way to see with your own eyes how phenomena have evolved such as heat waves, extreme rain events or wind patterns in the regions you know best. In short: that everyone can see climate change. At a teaching or journalistic level, it constitutes a magnificent resource to contextualize meteorology. For example, reproducing how the tragic Valencia DANA of 2024 began. In Xataka | This is how rain has changed in Spain in the last 30 years, on maps: the result is clear, alarming and there is no turning back In Xataka | The temperature your city will have in 2080, simulated on this disturbing interactive map Cover | Weather Replay

The iPhone 17 finally drops in price. New historical low for very few days

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Apple mobile phones are going through a very particular situation, and that is that in addition to the lack of stock that they have had since their launch eight months ago (especially the base model), the offers have been very brief with very unattractive discounts. However, MediaMarkt is celebrating its new Apple Days right now and it is precisely the iPhone 17 who stars in the campaign with a historic minimum price. If you were thinking of buying the mobile, now you can do it for 899 euros. Of course, the offer will end along with the campaign on May 28 at 9:00 a.m. The price could vary. We earn commission from these links The iPhone 17 at an all-time low price He iPhone 17whose official and recommended price is 959 euros, has received very few offers since its launch. The stock has also been very irregular, preventing, for example, buying it in some stores for a while. However, right now there is sufficient stock in the MediaMarkt online store, allowing it to be purchased at this new price in its five different colors. This mobile phone is the one that has benefited the most from the generational leap, since it is the one that has changed the most compared to the iPhone 16. We find a very good screen both for its quality and for its 6.3-inch format, but above all because it now has the 120Hz refresh rate that until its launch we only saw in the most expensive Apple phones. Another of the great news is that Apple has finally started manufacturing its mobile phones with a 256 GB minimum configuration internal storage, a larger number to store information locally. In addition, it is also worth mentioning that the iPhone 17 incorporates the A19 chip and that it has wireless charging through MagSafeone of the most useful technologies in Apple phones. ⚡ IN SUMMARY: iPhone 17 offer today ✅ THE BEST The arrival of 120 Hz: Until its launch, we only saw this refresh rate in the most expensive Apple models. Increasing base internal storage: Apple has finally abandoned the minimum configuration of 128 GB. ❌ THE WORST It gets too hot: something that happens especially during long gaming sessions or with intensive use. Its fast charging: It improves generation after generation, but it is not up to par with the competition, which has much cheaper mobile phones with greater fast charging. 💡 BUY IT IF… You are looking for the best quality-price ratio within Apple’s current generation, if you are coming from Android phones and want an iPhone with a 120 Hz refresh rate and you are also looking for a model that is compact. ⛔ DON’T BUY IT IF… The 256 GB of storage is not enough because you usually take a lot of photos (and in good quality) or if you are looking for a cheaper iPhone, like the iPhone 17e. You may also be interested Spigen Case for iPhone 17, Ultra Hybrid MagFit Compatible with MagSafe (Dura Clear Technology) – Light White The price could vary. We earn commission from these links Apple AirPods 4 Active Noise Cancellation, Wireless Headphones, Bluetooth, Adaptive Audio, Ambient Sound Mode, Custom Spatial Audio, USB-C Charging Case and Wireless Charging The price could vary. We earn commission from these links Some of the links in this article are affiliated and may provide a benefit to Xataka. In case of non-availability, offers may vary. Images | Antonio VallejoApple In Xataka | The best mobile phones, we have tested them and here are their analyzes In Xataka | Best truly wireless (TWS) earbuds with noise cancellation. Which one to buy and seven recommended models

We have been wondering for 4,500 years why the Great Pyramid of Giza resists earthquakes. Physics finally has the answer

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Throughout its more than 4,500 years of history, the Great Pyramid of Gizathe tomb of Pharaoh Cheops, has witnessed the rise and fall of empires, the erosion of the desert and also the earthquakes in an area with very intense seismic activity. This is crucial, because while the Alexandria Lighthouse or the Colossus of Rhodes succumbed to the Earth’s tremors, the 138-meter-high mass has remained immovable. The secrets Their longevity has been a topic of conversation for decades among Egyptologists, engineers and architects who tried to understand why they were still standing. And it is logical, because every physical object has a “natural frequency” of vibration, and this is crucial because when the seismic waves of an earthquake coincide with the frequency of an object, a very important amplification effect is produced. It is an effect that we can see, for example, on a swing, since we push it at the exact moment so that it goes higher and higher. And this is where the “superpower” of the Great Pyramid lies. What does it consist of? According to a study published in Scientific Reports, the pyramid and the ground on which it sits dance to completely different rhythms. This means that the pyramid has a natural vibration frequency which is around 2.3 Hz. For its part, the surrounding terrain of the Giza Plateau vibrates at a drastically lower frequency, close to 0.6 Hz. This mathematical gap is a true structural lifesaver, since, since there is no coincidence between the frequency of the stone mass and that of the ground during a seismic event, resonance is practically impossible. Waves from the earthquake pass through the area, but the pyramid does not amplify the vibration, dispelling the danger of a catastrophic collapse. It is, in modern terms, perfect passive seismic isolation behavior. Extreme geometry. This frequency decoupling is one part of the equation, since the focus is also on the impeccable architectural design and geometric of construction, which provides a uniform structural response to any mechanical stress. All this is thanks to the ingenuity of Egyptian engineers who created an artificial monolith that defies the laws of destruction through several characteristics, such as greatly lowering the center of gravity. And, unlike modern structures that are slender, in pyramids the vast majority of stones are concentrated in their lower third. This makes the building virtually impossible to overturn, regardless of the violence of the transverse shaking. More reasons. The square pyramid shape is not just an aesthetic or religious choice, but it is the most stable geometric figure that exists to withstand compression. Symmetry ensures that when seismic waves shake the building, the load and stress are distributed equally across all faces, avoiding critical fracture points. The internal chambers. One of the details that the investigation has pointed out is the unsuspected role of the famous internal chambers of the pyramidlike the King’s Chamber. Historically, they have been analyzed from a funerary perspective, but it is now suggested that, together with the impressive granite discharge blocks, they also act as a system to dissipate energy. In this way, seismic waves that manage to penetrate the structure encounter abrupt changes in the density of the matter, which causes the waves to refract and disperse. Did they do it on purpose? This is the question we can ask ourselves after reading all this, and the most plausible answer is that the Egyptians did not handle all these technical concepts, but they were absolute masters of empirical engineering. Through observation, trial, error and a deep knowledge of the materials, they arrived at the optimal solution so that they would last for life. They built for eternity based on massive stability and, in doing so, accidentally designed a building that meets the same safety parameters that we demand of our most critical infrastructure today to prevent them from collapsing in an earthquake. Images | Jeremy Bishop In Xataka | What we see in Petra is a city “carved in stone”: what it really hides is an amazing water system

Without gas stations in space we will not reach Mars. NASA knows this and is finally doing something about it

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Much of a spacecraft’s fuel is consumed in maneuvers to leave Earth’s orbit. For this reason, as manned missions move further away from our planet, we must begin to think about use space gas stations. These are not fuel pumps floating in space, but satellites, or even ships, capable of transferring fuel to a ship that needs it to travel further. At the moment, this is one of the weak points of many missions, so it is important to start working on technologies that allow it. At NASA they are very aware of this problem, hence this year they are going to launch LOXSATa mission that will test 11 different technologies to guarantee the transfer of propellants. 9 months ahead. LOXSAT is a NASA mission in collaboration with the company Eta Space. The objective of this mission is to test different cryogenic fluid management technologies so that in the future propellant tanks can be created in space. The mission will remain in low Earth orbit for 9 months. Meanwhile, 11 technologies will be tested focused on achieving four objectives: reducing boiling, improving propellant transfer, maintaining stable pressure and measuring propellant levels. The big problem. Cryogenic propellants, such as liquid oxygen at extremely low temperatures, are very efficient, but they have a major disadvantage. And in microgravity conditions, when the transfer between ships is carried out, the temperature cannot be kept low enough, so the fuel boils and suddenly transforms into gas. This causes a huge increase in pressure, which can endanger the ships involved. It seems to be that precisely this problem is the one that is giving SpaceX the most headaches. Like Blue Origin, this company must demonstrate its ability to refuel in space to be part of the Artemis missions, but it is not being easy. This is the reason why with LOXSAT methods will be tested to maintain stable pressure and reduce boiling. Space gas stations. The objective of this mission is to perfect the technology so that in the future there can be fixed propellant tanks in space. In other words, they hope that as we colonize space terrain we have gas stations so as not to run out of fuel. China on the heels. Ideally, in the future, large ships could exchange propellant. No space agency has achieved anything like this. However, China has indeed achieved it with satellites, in their Shijian missions. Plus, they did it in a higher orbit, so they are ahead of NASA in the particular race that has been uniting them for so long. Of course, at the moment, China has not tested cryogenic propellants, but tried hydrazine replenishment. There is still room for improvement. Write down the date. The mission will depart aboard an Electron rocket from Rocket Lab. The launch will be in the summer, no earlier than July 17, from New Zealand. Images | POT In Xataka | Jeff Bezos’ space company has overtaken SpaceX in a key milestone to go to the Moon and Mars: zero evaporation

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

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

Almost 2,000 years ago a man died with a mysterious case while fleeing Pompeii. We finally know his secret

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Get in the situation. It’s any day of any month and you are at home doing something when suddenly you hear screams in the street. You look out the window and see people running away in terror. Not only that. In the distance you see how the ash and burning rock rise from a volcano that both you and the rest of your neighbors thought were immersed in unalterable lethargy. What would you do in the face of such a scenario? something similar They lived 1947 years ago the Pompeians. Now we finally know what one of the unfortunate people who did not manage to save himself did: hold on to your briefcase of doctor. When Vesuvius woke up. The ruins of Pompeii were discovered long ago several centuries and archaeologists have been unraveling its mysteries for decades, trying to know above all what happened that fateful August 24, 79 AD (some versions speak of October) in which Vesuvius erupted and condemned the city of Campania, along with other towns such as Herculaneum, Stabia and Oplontis, asphyxiated under a layer of ash. However, despite all the research and rivers of ink that have flowed on the subject in recent years, the ruins of Pompey continue to retain their ability to surprise us. A figure in Ortho dei Fuggiaschi. One of the corners that has aroused the most fascination is the Ortho dei Fuggiaschithe ‘Garden of the Fugitives’, where we have found the remains of some 13 victims of Vesuvius. The reason is very simple: thanks to the method archaeologist molding Giuseppe Fiorelli20 centuries later, their corpses continue to starkly reflect the desperation of those men, women and children who tried to save themselves while their city was eclipsed by a dense rain of ash and lapilli, the walls collapsed and Vesuvius spewed pyroclasts. We knew that the victims who ended up perishing in the Ortho dei Fuggiaschi were probably seeking refuge, we also have a fairly precise idea of What were your last moments like? before dying. Thanks to Fiorelli’s plaster mold method we can even visualize the scene. The big question is… Can we go further? Who were those people? What did they do? What did they do before leaving their homes on the run? They are fascinating questions. Especially because, before perishing, some victims of Vesuvius they left us clues about your routine. There are cases, for example, in which the scene suggests that the victims were carrying jewelry and coinswhich leads us to think that they were trying to keep their most valuable possessions safe, perhaps so as not to lose them. Perhaps to start a new life in an impulse not so different from the one we would have today. Clinging to the medicine cabinet. Now researchers have discovered another story in it Ortho dei Fuggiaschil. More than 70 years after the first excavations and thanks to the use of To be more precise, scientists have identified a small box of organic material with metal parts and a series of instruments “compatible with a medical kit.” For example, a slab of slate that could have been used to make medical or cosmetic substances and surgical instruments. The x-ray and tomography examination has also shown a cloth bag with bronze and silver coins and a mechanism with a toothed wheel that allowed the box to be closed. Those responsible for the site stand out Furthermore, the study was carried out without putting the molds at risk. The decline of a doctor? That is the hypothesis with which the researchers work, who believe that the briefcase gives us a clue as to who the person who died next to him was. “He was probably a doctor, a victim of the tragedy while trying to escape, taking with him some of the tools of his trade,” he explains in a statement the Archaeological Park of Pompeii, which insists that the instruments located inside the case provide us with “a valuable and rare clue about his profession.” “2,000 years ago there were people who were not limited to practicing medicine during office hours, but were doctors at all times, even when fleeing the eruption, which was thwarted by the pyroclastic cloud that reached the group of fugitives who were trying to leave the city through Porta Nocera,” reflect Gabriel Zuchtriegel. “This man took his instruments with him to be prepared to rebuild his life elsewhere thanks to his profession, but perhaps also to help others.” Images | Pompeii Archaeological Park In Xataka | 2,000 years later, Pompeii continues to reveal fascinating things: the latest is a blue room for unknown uses

Today the green turtles are finally out of danger

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Halfway between South America and Africa, in the immensity of the Atlantic Ocean, a small volcanic point emerges that is the ascension island. For centuries, this piece of land was the scene of a systematic massacre, but today it represents one of the greatest success stories of marine conservation in the 21st century, culminating last October with a historic announcement that the green turtle has officially gone from being “endangered” to being classified as “least concern.” His story. To understand the magnitude of the Ascension phenomenon, you must first understand the journey since each season, thousands of green turtles They travel 2,300 kilometers from the coasts of Brazil to this remote island to spawnthat is, release their eggs. But… How do they manage to find this small island in an ocean as enormous as the Atlantic? A GPS. The famous biologist Archie Carr proposed in his day that these creatures use a kind of “olfactory GPS”, with which they were capable of find chemical fingerprints dissolved in the ocean currents that emanate from the island. Although the exact mechanics remain the subject of study, since genetic analyzes based on mitochondrial DNA leave no doubt that there are perfectly differentiated Atlantic populations and that of Ascension has a unique signature. In fact, studies indicate that turtles born in Ascensión travel throughout the American continent, representing between 43% and 47% of those captured on the coasts of Uruguay and entering the Patagonian Sea. A dark past. Since its discovery in 1501, Portuguese and British sailors saw Ascension not as a sanctuary, but as an all-you-can-eat buffet, as has been masterfully documented. in works as Ascension: The Story of a South Atlantic Island by Duff Hart-Davis. For centuries, common practices were “flipping” where sailors literally turned turtles over on the beach, immobilizing them to keep them alive with their fresh meat for months. Here there are historical testimonies such as that of chaplain John Ovington in 1691 who recounts the industrialized slaughter of these reptiles, which were sent alive to England to satisfy the demand for “turtle soup.” Something that brought the species to the brink of extinction. A turning point. It arrived in 1977, and coincides with the moment it began control and monitoring of this species on nesting beaches, reversing centuries of human impact. And the results indicate that while in 1977 3,752 nests were counted annually, today the island hosts more than 25,000 nests each year. Images | wirestock on Freepik In Xataka | We have been thinking for 40 years that Spain escaped Chernobyl because it was far away. AEMET has discovered that it was pure luck

NASA’s alliance to finally understand dark matter

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This week, NASA launched the Nancy Grace Roman Space Telescope, better known as the Roman Space Telescope. With its launch scheduled for September of this year at the earliest, it will become the space agency’s newest space telescope. It will coexist with others like Hubble or James Webbbut it has something that these don’t have. The ability to track vast expanses of the Universe at once. That’s what makes it special. Much more space. The Roman Space Telescope has 18 detectors that give it a panoramic view of space. It has been baptized with this name in honor of what is known as the mother of Hubble, for her important role in the development of this other space telescope. However, both have major differences. It is capable of looking at a field 100 times larger than that of Hubble. As a result, is expected that discovers tens of thousands of planets, billions of galaxies and stars and thousands of supernovae. An ideal companion for James Webb. The Roman Space Telescope also has advantages over the James Webb. If it is capable of analyzing a field 100 times larger than that of Hubble, in the case of James Webb exceeds it by 50 times. This allows you to observe without a clear objective on the part of the researchers. When exploring such large expanses, you may find something unexpected at any time. That’s where James Webb comes into play. And, although it can analyze less space at once, it is much more precise. Its mirrors are larger, so it captures more light and can discern more details. If the Roman detects something interesting, the James Webb analyzes it with a magnifying glass. Context matters. We have already seen that the James Webb can study the Roman detections with more precision. However, they can also help each other in the opposite direction, since the Roman is capable of providing context around James Webb’s objectives. Together to unravel dark matter. The biggest difference between the Roman Space Telescope and the James Webb compared to Hubble is that they can analyze space by focusing on emissions in the infrared spectrum, rather than visible light. As a result, it can see through cosmic dust, detect cold objects, and look further back in time. The latter is extremely useful for understanding the expansion process of the universe and, incidentally, unravel some mysteries about dark matter. The Universe expands. We have known for a long time that the universe is expanding. That is, the galaxies are moving away from each other, but not because they are moving, but because the space between them is stretched, like a balloon that is inflating. It is also known that this is happening more and more quickly. But why does it happen? It is not clear, but it is suspected that it may be due to dark matter. Supernovas that act as lighthouses. To better understand what is happening, it is important to measure very well how galaxies are separating. One of the ideal ways to do this is by using Ia supernova explosions as beacons. They are phenomena with a known maximum brightness, so they are used to measure distances, taking into account the analysis of their relative brightness from Earth or the place where a space telescope is located. The problem is that they only occur once every 500 years in the Milky Way. A telescope that measures in the infrared can travel very far back in time, but the James Webb only does so in small pieces. The Roman, on the other hand, can analyze such large areas that several of these explosions could be detected at the same time. That would allow several beacons to operate simultaneously to better map the Universe and understand why it is expanding as it does. Once the beacons were located, the James Webb would enter the game to do its detailed analysis. Together they can unravel very ancient mysteries of astrophysics. There is no one better than the other. Image | POT In Xataka | We have been studying the planets of TRAPPIST-1 for years with great hope. James Webb just knocked it down

We finally know when their 1.2 and 1.3 nm chips will arrive

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TSMC has revealed which photolithography will be ready for large-scale chip manufacturing over the next three years. The largest producer of semiconductors of the planet has made its itinerary official just a few hours ago during its North American Technology Symposium, which was held yesterday in Santa Clara (USA). And the technologies it has presented put an unappealable reality on the table: this Taiwanese company is determined to continue leading the integrated circuit manufacturing industry. To achieve this in 2029, it will have the A12 and A13 integration technologies ready for large-scale production, which are nothing more than derivatives of its A14 photolithography. From a commercial point of view these will be TSMC’s first 1.2 and 1.3 nm technologies, although it is important that users do not overlook that nanometers no longer faithfully reflect the length of the logic gates or another physical parameter, such as the distance between the transistors. Each chip manufacturer handles them very freely, which prevents users from directly comparing the lithographs they try to “sell” us. The disconnection between the nomenclature and the physical reality of integrated circuits is now almost absolute, but nanometers are still useful to identify the degree of development of each photolithography within the portfolio of each semiconductor manufacturer. Having said this, it is worth investigating what TSMC is preparing. A technical feat: A12 and A13 without using ASML’s High-NA machines Kevin Zhang, TSMC’s deputy chief operating officer, has clarified something very important: “I am amazed by our R&D team. They continue to find ways to drive technological development without using ASML UVE High-NA equipment. Someday we may have to use them, but right now we can continue to reap the benefits of current EUV technology without moving to High-NA which, as we all know, is extremely expensive.” That’s impressive. TSMC is going to continue developing very competitive lithography over the next three years without resorting to High-NA machines. The A13 lithography will be the result of the refinement of the A14 In the slide that we publish below these lines we can see that in 2028 TSMC’s most advanced lithographic node for the consumer market will be the A14, which will use GAA transistors (Gate-All-Around) second generation. Mass production of consumer chips with A13 lithography will start in 2029 and will take A14 integration technology as its base platform. This simply means that the A13 lithography will be the result of the refinement of the A14. According to TSMC, the A13 integration technology is an optical optimization of the A14, which in practice will allow it to achieve a 6% higher transistor density while maintaining compatibility between the two. On the other hand, N2U lithography will arrive in 2028, which is also aimed at the consumer market. It will be an extension of the N2 platform (2 nm) and will deliver performance, again according to TSMC forecasts, between 3% and 4% higher than N2P, as well as consumption between 8% and 10% lower. Finally, A12 lithography will arrive in 2029 with the A13, although it will be mainly intended for chips for data centers. It will use, like A13, second generation GAA transistors and NanoFlex Pro technology. The latter will allow IC designers to use fast cells for the critical parts of the GPU that need speed, and dense or efficient cells for the rest, thus optimizing the chip area down to the last millimeter. NanoFlex Pro is one of the innovations with which TSMC seeks to protect its technological leadership with the purpose that its chip customers for artificial intelligence (AI), such as Nvidia, AMD or Cerebras, continue to turn to it and not to Samsung or Intel. Image | TSMC More information | TSMC | Tom’s Hardware In Xataka | Japan wants to end the Netherlands’ leadership in lithography equipment. This is your plan to get it

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