wrong

Google has finally revealed how much electricity and water consumes its AI. Estimates could not be more wrong

by

We knew that generative artificial intelligence was a monster that was forcing companies to make large investments in energybut Google’s first detailed analysis has put the figures for the first time on the table. We go to the point. According to him Google Technical Reportbased on data from May 2025, an average text consultation to Gemini consumes 0.24 Electricity watts. To put it in context, it is something like watching nine seconds of television with a conventional TV of 100 W. Water consumption, which is still necessary to refrigerate serversis 0.26 milliliters per consultation; The equivalent of five drops of water. The carbon footprint of the entire inference process, according to the report, is 0.03 grams of equivalent. Wrong estimates. Just a year ago, third party analysis They estimated that a single consultation of AI in the Google search engine, such as those of AI overViews, could consume about 3 Wh, ten times more than a traditional search. This led to calculations as striking as the deployment of AI in the search engine would consume enough energy to load seven electric cars per second. With Google’s official data in hand, we see that this estimate was wrong by a 12.5 factor. The new software techniques (such as speculative decoding) and the most efficient models architectures (such as the Mixture-OF-Experts paradigm) have completely changed the panorama. Inference, no training. These figures, the most concrete published to date by the company, only take into account Gemini’s consumption by inferring user response. The expensive process of training the great language models that feed these tools remains a mystery, but Google is justified by saying that the massive adoption of generative AI, integrated even in its search engine, has put the focus on inference. In this direct relationship with the user it is also where greater efficiency jumps are getting large technological companies. Google says that, in the last 12 months, energy consumption has divided by 33 and by 44 the carbon footprint of each consultation to Gemini. Much of this jump has to do, not only with more efficient models, but with the improvement of AI accelerators (Tpus and Gpus), a hardware that Google develops internally. The amount of “prompts” per kWh that process the different models of AI Less than Netflix. Google is not alone in this new era of transparency. Sam Altman, CEO of Openai, also shed some light on the consumption of chatgpt. In one June 2025 publicationAltman said that an average consultation to ChatgPT consumes approximately 0.34 or energy Wh and about 0.3 ml of water. The energy figure is slightly higher than Gemini’s, although it is a difficult comparison. Altman did not give details of his methodology, so we do not know if his calculation includes all the factors that Google has considered (such as electrical consumption in refrigeration and in “idle” machines; that is, inactive, but ready for rapid consumption peaks). Both companies have been compared to television: “An hour of Netflix consumes 100 times more electricity than Chatgpt,” says an official OpenAI slide. The same that says that the total impact of AI on US carbon emissions would be around 0.5%. Images | Google In Xataka | The consumption of AI is overestimated and we must worry more about the air conditioning, according to the IAE

The Hubble has just taken the best picture of the interstellar comet. Makes it clear that we were totally wrong about its size

by

When astronomers announced the finding of an third interstellar object In the solar system, the first thing that caught attention was its size. There was talk of a core of up to 20 kilometers in diameter, colossal dimensions that fed all kinds of hypotheses, including that it was an extraterrestrial ship. Now, the most clear image of the kite, obtained by the old Hubble space telescope, has reduced expectations. It is much smaller than it seemed. The detailed new image of 3i/Atlas, Published by NASA Hubble teamhas allowed astronomers to limit the size of the comet with much greater precision. According to an analysis presented to The Astrophysical Journal Lettersthe icy nucleus of this object of another star system has a maximum diameter of 5.6 kilometers, but it could be much smaller, just about 320 meters. This new estimate is between four and 60 times smaller than the initial figures. The reason for the initial confusion is that, even for the Hubble, the code core is invisible. What we see is a brilliant “comma”, a dust and gas -shaped gas envelope that is expelled from the nucleus as the first observations from the earth could not distinguish the small nucleus of the huge halo of dust that surrounds it. It is getting rid of on the one hand. The image of the Hubble space telescope not only corrects the size of the kite, but also reveals important details of its behavior, such as an asymmetric dust ejection. The kite expels most of the material from the side that looks towards the sun, forming a kind of bright fan. This is a typical behavior in the comets of our own solar system: the heat of the sun causes the surface ice (pass from gas solid to gas) with more force on the daytime side of the nucleus. In addition, a very weak dust tail is distinguished in the direction opposite to the sun, formed when solar radiation pressure pushes the finest particles. This structure confirms that 3I/Atlas behaves as A classic cometand not as an anomalous object. According to the study, the kite loses between six and 60 kilograms of dust per second, a rate that, although it seems high, is consistent with that of other comets observed at a distance to the similar sun. Goodbye to speculation. This drastic readjustment in the size and behavior of the comet has important implications. A smaller core, similar to that of the other known interstellar comet, 2i/Borisovit fits much better in the cosmological models than one of 20 kilometers, which helps to explain that we have not yet seen more than three objects of other solar systems in our neighborhood. As for its shape, the brilliant cloud of gas and dust makes it impossible to detect if 3i/Atlas has an elongated shape as 1i/’oumuamuathe first known interstellar object. What we do know is that this traveler, which moves at the incredible speed of 209,000 km/h, will continue to be a priority objective for more modern telescopes, such as James Webb. Each new observation helps us better understand these fascinating cosmic tourists and, as it has been clear, to correct some precipitated hypotheses. In Xataka | NASA ignores Harvard’s study on an alleged extraterrestrial ship: “It is an interstellar kite”

Japan thought he had touched back on his birth crisis. I didn’t know how wrong it was wrong

by

He has tried pulling a checkbook And even acting as Celestinabut Japan has encountered a seemingly irresoluble problem: birth. The country has gone from demographic winter to the debacle without palliative. That is at least the reading left by the latest government data, which reveal that in just one year (from January 2024 to January 2025) the population of Japanese citizens has been reduced in More than 900,000 peoplethe biggest fall Since at least 1968. There is only one positive indicator: immigration. A fact: 908,574. Talking about birth in Japan for a long time is to talk about falls, pessimistic forecasts and a future full of unknowns. It is nothing new, but that does not prevent when your government publishes official data, as has happened This Wednesdaythe demographic debacle continues to surprise. And rightly. According to the data of the Ministry of Interior, in 2024 the country lost neither more nor less than 908,574 inhabitants, which leaves the census of Japanese citizens in 120.65 million. Far, far from 126.6 million which it reached in 2009. More than a blow. The data is bad in itself and does not improve when it is put in context. As Remember Kyodo News It is the 16th consecutive year in which the census of Japanese citizens fall, a trend that seems to have no softening visos. On the contrary. The 2024 was the greatest demographic collapse of the statistical series, which starts in 1968. You have to go back to that same decade to find a lower birth record than the one scored last year: 687,689. In the opposite pole, the number of deaths (almost 1.6 million) stood at maximum. A percentage: 59%. Demography is not simple statistical theory, it is directly connected to the country’s economy. And that is something that government data makes it very clear: after years of population debacle and with the Gripada Birth engine, Japan has found that barely 59% of its population It is at work age (between 15 and 64), significantly below the world average, which is around 65%, according to the latest estimates of the OECD. With less and less native population of working age and a society in full aging, the panorama facing the country is the least challenging. In fact there are those who warn that a ‘red line’ is crossing. Some authors point out that 2025 will mark the point at which the population born during The Baby Boom In the late 40s, an age in which the percentage of the working population collapses and increases that of those who require care is exceeded. That turning point even has a name: The “problem 2025”. And what does that suppose? That in practice it is quite likely that from now on Japan will meet “a sudden increase” of elders who need care, which will result in “a significantly greater burden for workforce,” warns An IPEI report. As for what he will mean for public coffers, years ago the government has accounts and already calculated that between 2025 and 2040 the general costs of social care will shoot 60%. How to solve it? The big question. Japan has been deploying a range of measures to encourage their birth and reverse their demographic crisis. And that happens so much to dedicate Millions of resources to programs Pronatality and raising aids as encourage the paternal casualties or ease May young people find a partner. It is nothing new or exclusive to Japan. In South Korea, China either Russia Governments have launched similar campaigns with Disrupt results. In the background, however, a key question underlies, such as I already pointed out in 2023 The BBC chain: Increasing the birth of a country is a matter of money? Do the ‘baby checks’ or the paternal casualties? To what extent do these factors influence and how much depends on more structural ones, such as the difficulties in accessing broad homes, labor philosophy, gender inequalities, the cost of life or simply a cultural change that no longer prioritizes motherhood? A word: immigration. Not all demographic indicators in Japan are in red numbers. Moreover, there is one that grew last year until reaching record values: that of the foreign residentsthose people from other countries with permission to remain in Japan for at least three months. According to government data, your number grew by 10.65% (354,089 people) until adding 3.68 million. The records had never reached such a high figure. In practice that means that foreigners already represent almost 3% of the total population, another figure that had never been achieved before. Japan Times Precise that in 2024 661,800 people were moved from abroad, which shows that the fall experienced by this registry during the pandemic, especially in 2021 and 20022. If there are both Japanese citizens and the foreign population, the total census of residents in the country is taken into account. 124.3 millionapproximately 554,000 less than the previous year. Why is it important? Because the influx of foreigners has served for more than softening the country’s demographic bleeding. It also involves a chute of energy for its economy. 85.77% of foreign residents are of working age, a significant percentage for a country with a birth problem and that has been aging years. The increase in immigration also has certain challenges. Its increase coincides with the rise of the ultra -right party Sanseitowho has campaigned by flying the motto of “The Japanese first.” Image | JJ Ying (UNSPLASH) In Xataka | More and more Japanese women decide to marry men from South Korea. And there is something that explains it: the K-Pop

For centuries the Christians pilgrimage to a remote cave to venerate Salome. Problem: They were wrong with Salome

by

There was a time, many centuries ago, in which Christians went to an old cave located in the Judea Lowlandsnear the village of Eliav, in search of inspiration. Over the years even a Sacred place For Islam. There (the remains of Salome were supposed to be, a biblical figure with echoes in the origins of Christianity. Some versions identified it as the midwife that attended the birth of Jesus. Others as one of his disciples and witness of the crucifixion. It is even said that she was Maria’s little sister. Now a group of Israeli archaeologists has reached a fascinating conclusion that relies on vestiges located years ago In the cave: I probably Salome that rested in his day in the crypt was neither the midwife nor disciple of Jesus, but an opulent and powerful aristocrat related to Herod. In a place of Judea … The Salomé cave is a wide sepulcher located in Sefeláthe lowlands of Judea, with an exceptional archaeological value. In fact there are those who consider it one of the funeral caves “More impressive” discovered in Israel and “More elaborate” of his time, the known as period of the Second templewhich extended between the centuries VI AC and I DC Specifically, experts believe that the crypt built between the I AC and I DC The cave itself is no novelty. The archaeologists excavated it decades ago, in the mid -80s, after they were located. Throughout the last years, however, they have expanded our knowledge about the grave. By 2022 A group of experts from Israel Antiquies Authority (IAA) made an excavation in part of the enclosure that revealed new data on its architecture and history. He also confirmed that for several centuries that remote Cave of Sefelá was used as a veneration space. And how is it? Wide. Elaborate. And fascinating. The archaeological set includes a lobby, a large patio surrounded by silry stone walls and a funeral cave with several cameras in which they were preserved Kokhimfuneral niches excavated in the rock, in addition to ossuaries. Although archaeologists studied the thorough crypt in the 80s, a few years ago they wanted to go further, analyzing in depth The 350 m2 courtyard and cleaning the inside of the cave. “The patio turned out to be one of the most elaborate of its kind compared to other cemeteries of the same period,” he says An article Posted by the IAA. Among other things, experts met stones with Jewish motifs and “delicate plant designs,” such as rosettes, grenades and acanthus vases. Nothing to do with most access courtyards to funeral caves found by archaeologists, who are usually excavated, not raised with masonry. Cave … and pilgrimage place. If the grave is so relevant, it is not only because of its size, architectural characteristics or decoration. There is another equal or even more relevant factor. For a while the cave was a pilgrimage place. During their excavations of 2022 and 2023 in the front courtyard, archaeologists discovered a row of positions in which clay lamps were sold and rented. “We find hundreds, complete and broken, dating from the eighth centuries and IX DC”, They explain Nir Shimshon-Paran and Zvi-Fire, directors of the excavation. “The lamps may have served to illuminate the cave or as part of religious ceremonies, similar to the candles that are distributed today in the tombs and churches,” They add. In the cave, Greek, Syriac and Arab inscriptions, recorded crosses and indications that reveal that the funeral space remained in use during the Byzantine and Islamic periods were also located. “The excavations show that, in the Byzantine period, the site had become a place of Christian pilgrimage,” experts say, which tells us about a wide period of worship that covers from the 5th century to the IX DC DC The cave of Salome. The question was obvious … Who belonged to the funeral cave? Who rested in his day in the crypt? And why the archaeologists found crosses and dozens of inscriptions recorded directly on the rocks of the walls? The answer is both simple and complex: the Sefelá cave was the resting place of ‘Salomé’. Among the inscriptions in different languages, archaeologists identified several in Greek that mention that same name, ‘Salomé’, supposedly a religious figure relevant to Christians. In An article Published this year on the sepulcher, IAA experts remember that, in the 1090s, the scholars that analyzed the inscriptions have already concluded that the first monks who arrived in the cave in the Byzantine period discovered an ossary with the inscription ‘Salomé’, a relatively frequent name in the Judea of the beginning of the beginning of Christianity. “During the second temple period it was not common Explain Paran to The Times of Israel. “It is possible that the cave contained an ossuary with the name of Salome, although we did not find it. It could have been looted.” So … who was the famous Salome? The midwife of Jesus? A tradition attributes that name to a figure that appears in it Protoevangelio de Santiagoapocryphal text in which a Salomé is cited as a midwife that doubted the virginity of Mary. The story tells that his disbelief earned him a punishment that ended up turning it into a symbol. “According to the Christian tradition, Salome was the midwife of Bethlehem who was called to attend the birth of Jesus. He could not believe that they asked him to participate in the birth of a virgin and his hand dried. He only healed when he held the baby’s crib,” Remember From the IAA. Other versions They place Salome as a disciple of Jesus, Mary’s sister or has even confused her with the mother of Santiago and Juan. “The cult of Salomé, sanctified by Christianity, belongs to a broader phenomenon: the Christian pilgrims of the 5th century found and sanctified Jewish places. The name Salome could have appeared in ancient times in one of the alter’s already disappeared from the tomb and thus the tradition … Read more

Mercedes wanted to jump into the electric car in record time and is clear that they were wrong

by

Four years now meet. It was a summer of 2021 when Mercedes launched his ordinance: in 2030 they would be an exclusively electric brand. They wanted to do it by building eight gigafactories to go out to their electric cars and batteries. Today they are clear that they were wrong. “They will last more than expected”. “We have changed the course, electrified combustion engines will last more than expected.” They are the words of Ola Källenius, CEO of Mercedes, in Auto Motor Und Sport Confirming what was an A Voca Secret: Mercedes will not fulfill the deadlines planned in the electric car. The company, therefore, will continue to bet on combustion engines that are key. It is not that he was going to withdraw overnight but that self -imposed obligation of being electric in 2030 led them to significantly reduce their offer until they focus exclusively on the electric car. Two symptoms (1). Although he had been rumored for a long time and in winter Mercedes already said that “There was too much optimism in the industry”there are two great symptoms that came to tell us clear that the time of combustion engines had not died. The first was The failure of EQS as flag bearer of the electric car in the company. The great electric Berlina, “the electric class” has been a failure and confirmed that the customer of a luxury car continues to bet mostly on combustion. Time will say if it is something exclusively linked to the autonomy or there is also a certain political positioning behind. The truth is that the company took advantage of the car to give a wash in the face of the image, sell the maximum refinement with the latest technology and its most advanced software with a Hyperscreen that surprised by groundbreaking. The truth is that the Mercedes client has continued to prefer the most classic class S. Two symptoms (2). The second symptom that advanced that Mercedes had changed course was given by its AMG sports division. The wealthy customer is especially complicated to convince when it comes to electrifying the fleet. To meet the European demands, Mercedes opted in its sports division for A four hybrid cylinders and although He got 680 hpcars that have mounted it have failure in sales. The solution has gone to return to these luxury cars the V8 engines. The company confirmed that will continue working on them And although they will be electrified, the potential car customer of more than 100,000 euros and extremely sports seem to continue asking for huge engines. It is no accident that, in his day, BMW already announced that he would continue to focus efforts on developing combustion engines. Specifically in those of six and eight cylinders. If you want gasoline, you pay it. Everything indicates that, as will happen with lower ranges, we will begin to see Two product categories clearly differentiated in Europe. Pollution policies will lead us to see An extensive electrification (with plug and electrical hybrids) in the low and medium range and a fence to the Combustion engines in the most expensive or luxury offer. In the case of Mercedes, everything indicates that they will continue to develop combustion engines but fenced to their most unattainable offer or Markets where hurry With the electric car are not so many. The confirmation that, in addition to the V8 for AMG, also They will continue selling the huge V12 Limited to the Maybach versions of its class S is a good example. But it is also that Mercedes has focused on “democratizing” its electric cars. He Electric Mercedes It will not be the cheapest car but the German company does want it to become its first great super electric success. And the formula is clear: improve the autonomy. “Rational”. For Källenius, in addition, this strategy is the most “rational.” Yes, the same one that Toyota has been holding so far, to sell the most demanded technology where they ask or let it sell. That is why they continue to focus on hybrids but ensure that the electric car will be key … in Europe. And Källenius knows that multienergy strategy helps them stay afloat. Its hybrid mechanics and huge engines will continue to be key in the United States and in Europe (who can pay it), while needing competitive electric cars in China. “It is our most important and crucial market for our technical innovations,” CEO himself pointed out from Mercedes a few months ago. A product that passes not only through the engine. Here, the latest generation software is essential because without it they do not think they can compete in China. They are aware that “Chinese clients not only use the car to move from A B. For many, it is also a second living room.” And there Mercedes needs to make differences if he does not want to star in a free fall. One that has already begun. Photo | Mercedes In Xataka | The Mercedes Class wanted to overcome the discomforts of the electric car. It is incompatible with a multitude of loaders

We have a big problem with AI agents: 70% of the time are wrong

by

The AI agents They fail more than a fair shotgun. That’s at least what reveals A recent study of researchers from the Carnegie Mellon University (CMU) and the University of Duke. These experts have analyzed the behavior of several of them and put them to the test to check if this is a “much noise and few nuts.” AND At the moment it is. Inspiration. Graham Neubig, professor of CMU, explained In The Register how inspiration had been A 2023 article of OpenAi. It talked about what types of work could be replaced by AI systems, but as he said “his methodology was basically asking Chatgpt if those works could be automated.” In that study they wanted to verify it by asking various AI agents to try to complete tasks that theoretically carry out professionals of those works. In Xataka Everything begins by asking a thing to an AI. When the AI ​​is asked for others, chaos begins Theagentcompany. To carry out their study, the researchers created a fictitious company they called The Agent Company and they used it so that different agricultural models tried to complete various tasks. These systems should be able to use access to several services such as Gitlab, Owncloud or Rocketchat to carry out these works, but their performance was disappointing. 70% errors. The researchers used two trial environments called Openhands Codeact and Owl-Roleplay and in them they were testing the most important AI models today. The best of all of them is Claude Sonnet 4, which managed to solve 33.1% of the proposed tasks. Behind are Claude 3.7 Sonnet (30.9%), Gemini 2.5 Pro (30.3%) and, much further, disastrous GPT-4O (8.6%), call-3.1-405b (7.4%), QWEN-2.5-72B (5.7%) or Amazon Nova Pro V1.0 (1.7%). In the best case the models can complete 30% of the requested tasks, but they fail in 70%. Or what is the same: a lot of noise and few nuts according to these benchmarks. Unable agents. During these tests the researchers observed various types of failure in these tasks processes. Thus, there were agents refusing to send a message to colleagues who were part of the task, there were also agents unable to manage popup windows during navigation sessions, and even agents who cheated or cheated. In one of the cases, they highlighted, an agent who had to consult a person in Rocketchat (an alternative Open Source a Slack) did not find it, so “he changed the name to another user to give him the user with whom he had to contact.” But they are improving. Even with those problems, the evolution is being positive in the performance of these AI agents. Neubig and his team tested a software agent that was able to solve about 24% of the tasks involved web navigation, programming and some related tasks. Six months later they tested a new version and achieved 34% of completed tasks. {“Videid”: “X8HJ0VY”, “Autoplay”: False, “Title”: “Chatgpt: What you did not know what you could do | tricks”, “Tag”: “”, “Duration”: “790”} Imperfect but useful. Not only that: these researchers pointed out that even failing so much, AI agents can remain useful. In certain contexts, such as programming, a partial code suggestion with which to solve a certain fragment of a program can end up being the basis of a solution in which the developer can then work. Care where you use them. But of course, agents make so many mistakes can be a problem in scenarios more sensitive to these problems. Thus, if we commission an agent who writes Correos and sends them to incorrect people, the result could be a disaster. There are solutions in sight, such as the growing adoption of Model Context protocol (MCP) that facilitates the interaction between services and AI models so that communication is much more precise and these errors can be mitigated during the autonomous execution of tasks. A benchmark that makes the AI ​​models look bad. For this expert one of the great disappointments is that companies that develop AI models do not seem interested in using it as a metric to improve their developments. Neubig suspected that “perhaps it is too difficult and makes them look bad.” It is something similar to what happens With the benchmark arc -ag2: It is such a difficult test for the IAS that today The best of all models of which they try to overcome it is o3, which achieves – a 3% of completed tasks. In Salesforce they coincide. That previous study is complemented With another realized by a group of Salesforce researchers. They created their own benchmark specifically aimed at verifying how various AI models would be checked when controlling typical tasks in a CRM like those developed by the firm. His project, called Crmarena-Pro, tests those AI agents in areas such as the Sales or Support Department. In Xataka If the question is whether IA is already as good as human intelligence, the answer is: solves this puzzle To replace workers, nothing. In their conclusions, these researchers reveal how the AI ​​models “achieve globally modest success rates, typically around 58% in scenarios with a single shift (execution), but with the yield significantly degrading approximately 35% in multiturn scenarios.” In fact, they explained, “agents are not generally prepared or have the essential qualifications for complex tasks.” The risk of some experts, with A great impact of AI on various jobsit seems precipitated. A complicated future. To these discreet results, the prediction of the Gartner consultant is joined. According to your studiesmore than 40% of the development agents projects will end up being canceled at the end of 2027. The main person responsible for the report, Anushree Verma, indicated that “at present, most of the agricultural projects are experiments or tests of concept in the initial phase, mainly driven by advertising already often badly applied.” The message is clear: there are too many expectations in relation to AI agents, but the current state of technology shows that today its application is problematic and limited. Image … Read more

Spacex has finally made public why the last Starship exploded. All rumors were wrong

by

White and in bottle? Milk. Two Consecutive starships that exploit In the same flight phase, practically in the same minute, in similar ways? Anyone would say that there was a common cause, but it was not so. Context. Spacex has shed light on the explosive loss of Starship During his eighth test flight on March 6. After successfully capturing the Super Heavy propeller, all expectations were set on the ship, which in the previous launch had failed during the ascent phase. After a successful separation and before reaching the necessary altitude to turn off, Spacex detected a flash near one of the central engines of the ship, followed by an “energy event” that made the engine disappear. Shortly after, two other central engines and one of the outer vacuum engines went out, which caused the ship to lose control nine and a half minutes after takeoff. The Starship 34 He disintegrated About the Caribbean. They were not the vibrations. After two consecutive explosions, everyone assumed that the problem had been the same. On flight 7, Starship 33 was lost eight minutes and 20 seconds after takeoff Because of stronger vibrations than expected, that had caused leaks of liquid oxygen and a fire In a non -pressurized area of ​​the lower part of the ship, which Spacex calls the “stern attic”. But it has not been so. “Although the ruling manifested himself at a point similar to that of the seventh flight, it is worth noting that they are clearly different,” Spacex wrote in a recent statement. “The mitigations implemented after flight 7 to solve the problems of harmonic response and flammability of the ship operated by design as planned,” added the company. What arose was a new problem. What happened on flight 8. According to the Spacex statement, the most likely cause of the loss of the ship during the eighth flight was “a hardware failure in one of the central raptor engines of the upper stage of the rocket, which resulted in a mixture and ignition not deliberate of propellents.” In essence, a engine component failed, causing a fuel leak and mixture (liquid methane) with oxidant (liquid oxygen). The consequent explosion destroyed the engine and committed the survival of the ship. Both problems originated in the lower part or stern of Starship, but the failure of flight 7 occurred in the “attic”, and that of flight 8 in the “basement”, the motor bay. All ready for flight 9. To address this new ruling for the ninth flight, Spacex has implemented reinforcements in key starship 35 joints, a new nitrogen purge system and improvements in the propellant drainage system. Later, he plans to introduce the new generation of Raptor 3 engines, with a complete redesign that addresses this type of problem. If there are no more delays, The ninth flight will take off this Tuesday, May 27 At 18:30, local time in Starbase (1:30 on Wednesday in Spain). It will be The first to reuse a super heavy propeller; Specifically, Booster 14, which flew in the seventh mission. The ship, on the other hand, will try again the objectives not achieved on flights 7 and 8, such as the deployment of eight Starlink satellit simulators and multiple reentry experiments. Image | Spacex In Xataka | “ELON, please, come back”: a week after the ninth launch of Starship, something is not going well at SpaceX headquarters

We thought we had solved the mystery of the giant “trees” of the Paleozoic. We couldn’t be more wrong

by

More than a century ago, when the first known fossils of Prototaxitesintuition said that it should be the remains of a tree. Decades of study revealed to paleontologists that this fossil did not belong to a plant, so everything seemed to indicate that it was an immense fungus. Now a new study has reopened this unknown. Neither plant nor fungus. The study in question has revived the discussion About the nature and taxonomy of Prototaxitesprehistoric beings that so far the catalog scientific consensus as fungi. The involvement of “taking out” these beings from the evolutionary branch of fungi is that perhaps these beings belonged to an extinct and unknown branch of the tree of evolution. 400 million years ago. What we do know about Prototaxites For the fossil registry, it is that being trafficking with organisms that were alive towards the middle of the Paleozoic era, does Between 420 million and 375 million years. These beings had a more or less cylindrical structure, similar to a trunk and stood up to eight meters above the sky with a diameter that the subway could reach. These measures and their age make them one of the first large beings of those of which we have record in the fossil registry. The debate on the nature of these prehistoric living beings seemed to mid -2000s. It was then that an analysis revealed that the Prototaxites They did not obtain their carbon from photosynthesis, as is the case of plants, but obtained from other living organisms, as fungi do. Rhynie Chert. The new study that reopens the case It now contributes tests that this being did not belong to the kingdom of fungi and focuses on one of the known species of this genus, Taiti prototaxites. The team resorted to the fossils found at the Rhynie Chert site in Scotland. This site contains not only fossil remains of this species, but also of fungal species and others belonging to other kingdoms of nature. Similarities and differences. The new analysis of the fossils of this species ran into some similarities with fungal structures such as those that could be expected. However, despite having tubular internal structures similar to those of fungi, these tubes in P. Taiti They branched and linked in a different way from what they could expect. That was not, however the strangest detail. The analysis did not detect in fossils evidence of the products that are associated with the presence of chitina, a compound present in the cell walls of all contemporary fungi and that we know was also present in prehistoric fungi. They found that the chemical “firm” was more similar to that left behind by lignin, a polymer that we associate with vascular plants. The study has been published for now draft In the repository Biorxivso the standardized scrutiny of peer review has not yet passed. So what? This detail implies that we must extreme caution when drawing conclusions from the study we have in front. Even so, the signing team of the study outlines in this its conclusions, in principle preliminary. In his study, the team concludes that “the morphology and the molecular footprint of P. Taiti It is clearly different from that of fungi and other organisms preserved with it in Rhynie Chert, and we suggest that it is better considered a member of a group not described and totally extinct of eukaryotes. ” In Xataka | An amateur fossil search engine is behind a curious finding: vomiting of the dinosaurs era Image | Іщн

Physicists believed that this quantum phenomenon was impossible. They were very wrong

by

This appointment of Richard FeynmanNobel Prize in Physics for their contributions to quantum electrodynamics and one of the most admired scientists of the twentieth century, condenses very well The complexity of quantum physics: “If you think you understand it, you don’t really understand quantum physics.” Quantum mechanics study the laws that govern The world of the very smallof the particles, as well as the interactions to which the atomic and subatomic structures are exposed. Most of these rules are radically different from the laws we have become familiar with in the world in which we live. In the macroscopic world. Many physicists have spent the last century trying to understand how known quantum phenomena work, and also striving to identify unknown quantum rules. The problem is that working with the extremely small, with the particles, is very difficult. However, this does not mean that they are not successful. To hunt and capture the elusive transition of super -artedia Physicists Klaus Hepp and Elliott H. LIEB predicted in 1973 a quantum phenomenon known as super -transiant phase transition. For more than half a century the scientific community has worked out without success to find evidence to protect the existence of this mechanism beyond mere theory. But everything changed on April 4. That day a group of researchers from Rice University, in Texas (USA); the University of Shanghai (China); NASA’s National Laboratory (USA) or the National University of Singapore, among other scientific institutions, published an article in Scienceadvances in which he explains the procedure he has used to experimentally observe this quantum phenomenon so elusive. Understanding what is the transition of super -transiant phase and all its implications is not simple, but we can get a rather precise idea about what this mechanism consists of if we observe it as a sudden change in a particle system that causes many of them begin to behave in a coordinated way. When this phenomenon does not occur, atoms interact in a weak way and behave in a disorganized way, but when the super -artary phase transition arises, they synchronize and exhibit the same behavior, giving rise to a new state of matter. When the super -transiant phase transition arises the atoms are synchronized and exhibit the same behavior The most surprising thing is that this new state gives the material unusual properties from a macroscopic point of view. The researchers who have mentioned some lines above have managed to carry out the first direct observation of this mechanism. And they have succeeded by triggering the transition in a glass composed of erbium, iron and oxygen subjected to a temperature of −271.7 degrees Celsius. In addition, they exposed it to a magnetic field of no less than 7 teslas, so it was more than 100,000 times more intense than the magnetic field of the Earth. What they pursued was to induce the transition of super -transiant phase by coupling the spin of the particles. And they succeeded. The spin is an intrinsic property of The elementary particleslike the electric charge, derived from its time of angular rotation. The first experimental evidence that endorsed its existence It arrived in 1922 Thanks to the experiments of German physicists Otto Stern and Walther Gerlach, although scientists did not begin to understand the nature of this very important property of elementary particles until a few years later. The reason why it is not easy to understand precisely what the spin is because it is a quantum phenomenon, so it is not quite correct to describe it as a conventional rotation movement in space. Even so, the description that I have proposed in the previous paragraph is usually used for a didactic purpose because it helps us to intuit without too much effort what we are talking about. In any case, the most interesting thing is that the transition of super -transiant phase opens the door to the next generation of quantum technologies. This is the really important thing. According to physicists involved in this experiment, this mechanism can be used to put quantum sensors endowed with a much higher sensitivity than those currently available. And it can also be used to produce more robust cubits for Quantum computers. Sounds good. I hope your predictions are fulfilled. Image | Generated by Xataka with Dall-e More information | Scienceadvances In Xataka | CERN has achieved something unprecedented: transform smartphones sensors into an antimatter chamber

We thought they were the red color in a galaxy he indicated that he was dead. There are those who believe we are wrong

by

A simple and useful way of knowing if a galaxy is old or if on the contrary it is full of new star formations is in its color. The rule is simple: the most reddish galaxies are usually older; The most bluish, young. Young and red. Now a researcher at the University of Missouri has raised a third waythe possible existence of reddish but still alive colored galaxies, that is, in the process of forming new stars. Among other implications, this could mean that our universe forms even more stars than we thought. Red or blue. Galaxies are usually categorized according to the color of their stars. Blue stars usually shine with more force for less time, so when the blue tones predominate we know that new stars are still forming. The stars with warmer tones resist more so when a galaxy dies, that is, when it stops creating new stars, these more reddish stars are what remains. However, there is something that escapes us in this hypothesis. According to Charles Steinhardt, author of the new study, this model raises certain inconsistencies, for example in the ratios between stellar masses and masses of black holes, and enters the initial mass functions of red and blue galaxies. What if they are not dead? In An article Posted in the magazine The Astrophysical JournalSteinhardt raises the existence of a different category, red and young galaxies. The key would be in the fact that in these galaxies, the stars formed would be of less dough and that therefore, also the youngest would shine with reddish tones. “The red -star formants mainly produce little dough stars, which would make them look red despite the permanent births of stars,” Explain in a press release Steinhardt. Birth and fusion. One of the keys to this hypothesis is in the post-stallid galaxies (Post-Starburst). The galaxies can go from being young stars producing to lifeless galaxies in two ways. The first, through a slow and natural evolution; the second, after a burst of stars (Starburst). When two galaxies collide, the subject of both meets, accelerating the accumulation process that gives rise to new stars. This makes the galaxy go through a stage of rapid stars formation, a stage that leaves the galaxy without fuel. In his hypothesis, Steinhardt raises the possibility, that some of these galaxies have been forming red and small stars from the beginning, and not being the result of a burst. This possibility would imply, Explainhave to reclassify some of the galaxies we know. More stars. The new hypothesis postulates that red galaxies continue to create new stars which in turn implies that our universe produces even more stars than those we believed. “The existence of these galaxies can mean that the universe has formed a significantly greater number of stars than before,” Steinhardt defends. The galaxies are complex formations and we may still notice important details about them. Details such as the details of their life cycles, adds the researcher. In Xataka | The James Webb has found a galaxy when the universe was 330 million years old. Hide an entire enigma Image | Este/Hubble & Nasa, J. Kalirai, A. Milone

Log In

Forgot password?

Forgot password?

Enter your account data and we will send you a link to reset your password.

Your password reset link appears to be invalid or expired.

Log in

Privacy Policy

Add to Collection

No Collections

Here you'll find all collections you've created before.