This 65-inch TV drops (again) and reaches a historic low price with which you can set up your home theater without spending a lot

For those who enjoy watching movies, series (or even football and other sports) at home and are thinking about taking the leap to do it in a big way, Hisense has a very interesting 65-inch TV. It is about the Hisense 65E63QT which stands out in features, but now also in price, since on Amazon, it has reached its all-time low: 359 euros. Hisense 65E63QT – UHD 4K, Smart TV 65 Inch The price could vary. We earn commission from these links A TV with which you can set up your own home theater will not be expensive For some time now, Hisense has been one of those firms that are surprising us with their smart TVs with a moderate price and good features and this model is a good example of this. For those looking to set up their own home theater, what is most striking is its panel 65 inch VA. This offers 4K UHD resolution and 178º viewing angles. Although it is also characterized by being compatible with image formats such as Dolby Vision and HDR10. In the audio section, on the other hand, its two speakers offer an RMS power of 14W and are compatible with DTS-X and Dolby Audio. Integrate the voice assistant Alexa and works under the operating system VIDAA (version 8.5). It also works for gaming, since it integrates a Game Plus mode and comes with a good connectivity section, since it has Bluetooth, WiFi, two USB-A ports, headphone output and three HDMI 2.1 ports. You may also be interested in these accessories for this TV PERLESMITH Tilting and Rotating Articulated Wall TV Stand The price could vary. We earn commission from these links Hisense HS3100 – Sound Bar 3.1 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 | Hisense In Xataka | Best home theater projectors. Which one to buy and five recommended models from 299 to 18,000 euros In Xataka | Mega-guide to set up a home theater: projector, screen, sound system and more

Their fortunes set a new record, growing by 2.2 billion dollars

While millions of workers suffered massive layoffs, budget cuts and uncertain tariffs of the Trump administration, the 500 largest fortunes on the planet added a new record, adding 2.2 trillion dollars to their combined wealth, which already rises to 11.9 trillion dollars. However, even in this bullish context, there are figures in which this growth has been especially striking. The most notable, of course, the growth of the fortune of the richest person in the world. His assets have increased by no less than $358 billion in just 12 months. Record growth. He Bloomberg Millionaires Index recorded the largest annual increase in wealth in history for the 500 largest fortunes in the world. No less than 2.2 trillion dollars in 2025. If we look for someone responsible for this meteoric growth, we find some important clues in the profitability of the S&P 500 index, which has reached 17% thanks to the behavior of the 7 Magnificentas well as in the gold revaluation and other raw materials. Precisely the good stock market performance of the Big Tech It is responsible for the fact that 23% of those profits were concentrated in only eight individuals who, (oh, coincidence) are its founders or main directors. As and how they point from Bloombergthe total assets of those 500 largest fortunes in the world reached $11.9 trillion in 2025, surpassing any previous record. Millionaires among millionaires. But when it comes to naming names, Elon Musk is one of the most notable. The CEO of Tesla far led the level of profits, surpassing for the first time the ceiling of 600 billion dollars thanks to SpaceX valuation before its IPO. His fortune went from 421.2 billion in January up to the 788.1 billion dollars that are currently attributed to it. That implies an increase of 87.1% in his assets in just one year. On the other hand, Larry Ellison added 57.7 billion to his fortune for the role of Oracle in the development of AI, leaving its founder with a fortune of $231 billion. For its part, the evolution of other regular millionaires in the Top 10 with the highest fortunes, such as Jeff Bezos, Larry Page and Mark Zuckerberg, linked their increase in wealth to the performance of their companies on the stock market. Larry Page and his founding partner of Google, Sergei Brin, they escalated quickly in the heat of the last Gemini trading moveswhile Amazon and Goal suffered to stay in the mix.​ Impact on billionaires. Beyond the increase in assets of the ultra-rich participants in the race for AI, the wealth boom among billionaires has been a global phenomenon, registering growth of more than 16% in 2025, three times the average of the last five years, as noted the report from Oxfam Intermón. This jump, quantified at about 2.5 trillion dollars, is equivalent to the assets of 4.1 billion people, the poorest half of the planet. On the other hand, the report focuses on the increase in the number of billionaires, that is, those people with assets greater than 1,000 million dollars. For the first time, there were more than 3,000 billionaires in the world, which is further proof of the trend towards the concentration of resources in a few hands. Wealth in Spain. 2025 was also a year of growth for millionaires in Spain. In fact, for the first time there is 32 billionaires in Spainmostly men and with an average of age over 80 years. In 2024, this select club only had 27 members. Their combined wealth is estimated at 197.5 billion euros, the maximum recorded. This record represents an increase of 28.3 billion compared to 2024, which implies a real growth of 13.6%, more than four times the forecast for the national economy of 2.9%.​ However, there is one figure that accounts for a good part of that total amount: Amancio Ortegawith a fortune estimated at more than $142.6 billion. “This means that Spanish billionaires earned on average more than 77 million euros a day,” indicate the authors of the report from Oxfam Intermón. In Xataka | The emir of Qatar travels in a private jet so big it helped upgrade Sardinia airport Image | Flickr (Oracle, Gage Skidmore), GTRES

AEMET has set an expiration date on Borrasca Harry. But what’s coming from Greenland is about to begin

On January 17 and 18, AEMET issued a series of special warnings due to a Mediterranean storm that has been causing problems in the Balearic Sea for days. But, in those notices, there was something else: a problem. And no, it’s not just that we are going to the most unstable week of what we have had in winter. And then? In those noticesAEMET describes a blocking pattern that was elongating a trough and favoring a retrograde DANA. That was Harry, a high-impact storm forming in the Mediterranean (and already is leaving snow near the coast). According to AEMET estimatesthe accumulations can be on the order of 200 liters in 48 hours in the Girona area and more than 20 centimeters of new snow in southeastern Iberian. But Harry ends tomorrow and that’s where the problems begin. The jet returns. Because, in parallel, the anticyclonic blockade between Greenland and the Scandinavian peninsula will interrupt the zonal flow and force the polar jet to lower latitude. In fact, it will descend so much that it will focus directly on Spain, guiding fronts and cold masses from the north. Or, rather, we are talking about cold advection with synoptic trajectories. These models still lack consistency, of course: but the models and outputs are converging in this scenario. What should we expect? Right now, the point of greatest risk It is the Mediterranean coast. Although Harry already has an expiration date, it is a storm that can be very intense locally and can cause problems in short basins (with rapid floods). Not to mention the difficulties at the coastal level and the gusts of wind. Then, if we are a little lucky, it will be reactivated.Atlantic storm machine and a train of storms will begin to enter from the west. If we are unlucky, the cold will return. But, well, at the gates of February it is still within what is expected. Image | ECMWF In Xataka | After the cold comes something much more problematic: the explosive cyclogenesis that AEMET predicts for the Mediterranean

The water from the Tagus is going to stay in Castilla-La Mancha. So Alicante and Murcia already have a plan B: set up desalination plants

Water management in the Spanish Levant is not only a question of engineering, but a political and territorial battle that is released in each cubic hectometer. While the reservoirs at the head of the Tagus fluctuate and the rules of the game change in the Madrid officesthe Segura Basin tries to shield its survival through technology. With the Tajo-Segura Transfer in the regulatory spotlightthe Government has been forced to accelerate its “plan B”: converting sea water into the lungs of European agriculture. Green light to the preliminary projects. The Segura Hydrographic Confederation (CHS) already has on the table the design of the two desalination plants that promise to give a break to the Cuenca Plan. Mario Urrea, at the head of the organization, has signed the contracts to draw up the preliminary projects for works that will cost 1.34 million euros in the technical phase alone. However, the plan has already collided with local political reality. According to local mediathe exact location of the plant planned for the left bank (Torrevieja area) is a point of friction: the Torrevieja City Council and the Generalitat Valenciana have already expressed a “frontal rejection” of the possibility of the new plant being installed in said municipal area. To avoid this premature shock, the CHS refers generically to the “surroundings of the La Pedrera reservoir”, although technically the most viable thing would be to locate it next to the existing plant in Torrevieja, very close to the sea. The puzzle of numbers. The objective is to achieve water guarantee criteria, but the details reveal notable confusion in the scope of the plan. While the Government initially pointed out to a 100 hm3 plant for the Torrevieja area, the current specifications reduce that figure by half, placing it at 50 hm3. However, planning suggests that, adding the capacities of both facilities, up to 150 hm3 per year could be contributed to the system. The surgical distribution of this unconventional resource will be structured as follows: Right Bank Desalination Plant (Águilas): It will produce 50 hm3 annually. Of these, 33.5 hm3 will be used to relieve overexploited underground masses such as Alto Guadalentín and Mazarrón, while 16.5 hm3 will reinforce direct supply in Lorca, Totana and areas of Almería. Left Bank Desalination Plant (Torrevieja): With a projected production of up to 100 hm3 (according to the horizon of the basin plan), it will allocate 58.5 hm3 to alleviate the undersupply of the Cartagena and Alicante Field (Albatera, San Isidro), in addition to dedicating 41.5 hm3 to the recovery of aquifers such as Cabo Roig. A divided plan under the stigma of energy. The project has been divided into two strategic lots with an initial execution period of 12 months for its drafting. The lot on the right bank has been awarded to the company Typsa for 674,575 euros, with the mandate to study its connection with the existing desalination plant in Águilas. For its part, the lot on the left bank has been awarded to Ayesa Engineering for 669,286 euros, with the mission of connecting the infrastructure with the La Pedrera reservoir to distribute water through the post-transfer channels. A critical aspect is sustainability. Both preliminary projects must necessarily include the design of photovoltaic solar plants to reduce the high electrical cost of desalination. However, this point raises skepticism: as the local press remembersthe Government has not yet managed to materialize the solar plant in 2024 for the current Torrevieja desalination plant due to lack of location. The time factor: an insurmountable obstacle. Despite the signing of these contracts, the solution will not be immediate. The Ministry estimates that these desalination plants will take between five and six years to be operational, given that after drafting the preliminary project comes a complex phase of environmental processing, public information and possible expropriations. For irrigators, this calendar is “unaffordable”. They find themselves trapped in a temporal clamp; While climate change and the new transfer rules impose cuts today, the promised alternative will not arrive, in the best of cases, until the beginning of the next decade. Water peace or temporary truce? The commitment to desalination is the central axis of the Ministry for the Ecological Transition’s strategy to close the Segura water gap. However, with the transfer rules about to change and an execution of works that is projected into the next decade, the new desalination plants are born in a climate of technical and political uncertainty. The signature of Mario Urrea puts the paper on the table, but water—and territorial peace—still seem to be far away on the horizon. Image | CHS Segura Xataka | After the rains, the battle between communities begins: the Tagus is full and the Segura basin is already demanding its water

when Albacete set the record for a capital at -24ºC

Europe has started 2026 with cold. Very cold. But even the icy winds that have hit part of the continent and the peninsula these days, sinking the thermometer below 15 ºC, they pale when compared to what Castilla-La Mancha experienced in the early stages of 1971. That year left a meteorological curiosity in Albacete, a record that has remained unbeatable since then in the historical records of the Aemet: the coldest temperature ever remembered in a provincial capital, neither more nor less than -24 degrees. The most curious thing is that not even that value (more typical of other Siberian latitudes) marks the record of cold registered by the agency in Spain. “Extreme values”. The Aemet not only helps us know the weather in the ‘future’, to know if this week it is going to rain or be sunny, we should dust off the winter scarves and gloves or we can give the anoraks a break. The agency also allows us to know what the weather was like in our cities 10, 30, 50 years ago… even more, almost a century ago, something that is possible thanks to its series of “absolute extreme values”. The service (available online) details the record measurements associated with each weather station since 1920. What does that mean? That we can know the record values ​​of rain, temperatures, snowfall or gusts of wind captured by each of the stations managed by Aemet in the 50 provinces of Spain, in addition to the cities of Ceuta and Melilla. Their data must be handled with some caution (especially in comparisons) because they are subject to important handicaps. Aemet does not clarify, for example, whether all the sensors have been operational for the same amount of time or how long each one has been working. Another key fact is that within the same region (or even locality) there may be thermal differences or significant rainfall. It all depends on where the sensor is installed. A station located in a port area may collect very different values ​​than another located within the same municipal area but in the heart of the urban area or in a higher area, such as an airport. In fact, it is not strange that Aemet has sensors that collect information near the terminals. provincial capital lowest temperature Date Madrid -15.2ºC 01/16/1945 Barcelona -10ºC 02/11/1956 Valencia -7.2ºC 02/11/1956 Saragossa -11.4ºC 02/05/1963 Seville -5.5ºC 02/12/1956 Malaga -3.8ºC 02/04/1954 Murcia -7.5ºC 01/16/1985 Palma de Mallorca -10ºC 02/12/1956 Las Palmas de Gran Canaria 6.5ºC 03/27/1954 Alicante -4.6ºC 02/12/1956 Bilbao -8.6ºC 02/03/1963 Cordova -8.2ºC 01/28/2005 Valladolid -18.8ºC 01/03/1971 Victoria -21ºC 12/25/1962 To Coruña -4.8ºC 01/07/1985 Grenade -14.2ºC 01/16/1987 Oviedo -6ºC 01/07/1985 Santa Cruz de Tenerife 8.1ºC 02/22/1926 Pamplona -16.2ºC 01/12/1985 Almeria 0.1ºC 01/27/2005 San Sebastian -12.1ºC 02/03/1956 Burgos -22ºC 01/03/1971 Albacete -24ºC 01/03/1971 Santander -5.4ºC 01/21/1957 Castellón de la Plana -7.3ºC 02/11/1956 Logrono -11.6ºC 12/25/1962 Badajoz -7.2ºC 01/28/2005 Salamanca -20ºC 02/05/1963 Huelva -5.8ºC 02/17/1938 Lleida -15.4ºC 01/02/1971 Tarragona (Reus Airport) -8ºC 02/11/1983 Lion -17.4ºC 01/13/1945 Jaen -8ºC 02/11/1956 Cadiz -1ºC 02/11/1956 Ourense -8.6ºC 12/25/2001 Girona -13ºC 01/09/1985 Lugo -10ºC 12/23/2005 Caceres -5.8ºC 02/11/1956 Guadalaraja -11ºC 01/28/1952 Melilla 0.4ºC 01/27/2005 Toledo -14.4ºC 01/18/1945 Ceuta -0.4ºC 01/05/1941 Pontevedra -5.5ºC 12/10/1922 Palencia -14.8ºC 01/04/1971 Royal City -13.8ºC 01/03/1971 zamora -13.4ºC 01/03/1972 Avila -16ºC 01/15/1985 Huesca -13.2ºC 02/12/1956 Basin -17.8ºC 01/03/1971 Segovia -17ºC 01/06/1938 Soria -15ºC 12/17/1963 Teruel -21ºC 01/12/2021 One piece of information: -24ºC. Taking into account the above, the historical record of the Aemet leaves a curious fact, one that I remembered recently in X Vicente Aupí, popularizer and astrophotographer: on January 3, 1971 Albacete the thermometers dropped neither more nor less than -24º. The data was obtained at the air base and is interesting for several reasons. Not only is it the lowest value recorded in the city since records began, it is also the coldest confirmed in a provincial capital. Freezer records. The next lowest value among the provincial capitals was experienced by Burgos that same day (January 3, 1971), when the mercury dropped to -22. Vitoria and Teruel follow in the ranking. The first recorded -21 ºC on Christmas Day 1962, the second endured the same temperature on January 12, 2021. These are surprisingly low data, although in recent decades Aemet has reported a few measurements below -15º. Meteorological bulletin of January 3, 1971, when the station located in Albacete recorded a minimum of -24 ºC, a record value among the provincial capitals of Spain. Extract from the meteorological bulletin of December 17, 1963, when a minimum of -30 ºC was recorded at the Calamocha-VOR observatory station, province of Teruel. to stay at home. The most striking thing about January 3, 1971 is that the thermometer not only collapsed in Albacete. Another interesting resource that Aemet offers is the newspaper archive of the ‘Meteorological Bulletin’a part edited by the agency’s predecessors between March 1893 and well into the 21st century. On its website today we can consult practically all of its digitized issues from 1894 to 2007. Among them is the census of that Sunday, January 3, 1971. And what does it tell us? That day the people of Albacete were not the only ones who faced a wave of polar cold. Although the city took the cake, in Burgos they scored -22º, in Valladolid, Teruel and Daroca -19º and -18º in Cuenca or La Molina. Some of these values ​​were also obtained at aerodromes, just as happened in Albacete, where that day the thermometers they did not go beyond -6º. In all the provincial capitals of Spain, that day the mercury did not rise above 10 ºC, the maximum recorded in Almería, Cádiz and Castellón. The coldest day? Yes. And no. The figure for Albacete is a record among provincial capitals, but in Spain we have endured even colder days. At the end of 1963, the residents of a small town in Teruel saw how the mercury dropped until it reaches -30 ºC. That is the surprising minimum temperature recorded on December 17 of that year … Read more

In 1845, John Franklin’s expedition set sail in search of the Northwest Passage. 180 years later his loss remains a mystery

On the morning of May 19, 1845, Captain John Franklin and his expedition weighed anchor from the Greenhithe Harboralmost at the mouth of the Thames. They were looking for the Northwest Passagethe (at that time theoretical) maritime route that would link the Atlantic and the Pacific through northern Canada. They never came home. 129 men who never returned and who, for 170 years, have been one of the great questions of scientific and naval exploration. We now know why the men of John Franklin’s lost exploration died. There are those who insinuate that the trip started badly from the beginning. It should never have been in the first place. John Franklin. The first option William Edward Parryone of the great English explorers, but he had already traveled to the Arctic five times and “was tired.” So he declined the offer. Secondly, they thought about James Clark Ross. Ross has just arrived from Antarctica where he had explored the Ross Sea and Island. In fact, the ships on that expedition were the same as those that would be used on this mission (two of Ross Island volcanoes They are called Erebus and Terror in honor of the ships). But upon returning to England, he became engaged to his future wife and decided that great explorations were no longer for him. He was followed by James Fitzjames (discarded due to inexperience), George Back (considered too controversial) and Francis Crozier (who, well, was Irish and that was more than enough reason to rule him out). Seeing the yard, John Barrow, second secretary of the Admiralty, called John Franklin. To this day no one knows why Franklin, who was already a legend at the time and was almost 60 years old, he said yes. But the fact is that, as I said, they left the vicinity of London that day in 1845. They stopped in Orkney and the convoy formed by the two main ships (HMS Erebus and HMS Terror), the HMS Rattler (the first English warship with steam propulsion) and a transport headed to Greenland. There they sacrificed ten oxen and the expedition began its solo journey. The search for the Northwest Passage The travels of Marco Polo are a peculiar book. Not only does it remain a very interesting precedent for current anthropology, but it served as an inspiration for many during the era of great exploration. The image you can see above is precisely the annotated copy of ‘The Voyages’ that Christopher Columbus had. In one of its versions, the Italian one from 1559, a Chinese province called Anian. We assume that it was from there that the geographers and explorers who discussed whether America was a new continent or, on the contrary, an Asian peninsula, got the name of the Strait of Anian, the separation between Asia and America that would give access to the Northwest Passage. It is what we know today as the Bering Strait and for years it was pure mythology. But, first, Ferdinand Magellan and his crew turned around Cape Espiritu Santo and found themselves face to face with the southeastern passage; and, second, a Dane in the service of Russia, Vitus Beringrediscovered for the West the strait through which Semyon Dezhniov had already traveled sixty years before. The rest was geopolitics: the quick passage to the Pacific without having to pass near the Spanish territories in America was too juicy. In 1745, an English law promised 20,000 pounds to whoever discovered the pass and the boom began. I have tried to convert the amount to a current currency and I have not been able to do it accurately, but I have drawn one conclusion: it was a lot of money. Favorable weather In early August 1845, two whalers, the Prince of Wales and the Enterprise, encountered Franklin’s ships in Baffin Bay. They were waiting for favorable weather to enter the Strait of Lancaster. That was the last time they were seen. Two years passed. And, little by little, Lady Jane Franklin, some members of Parliament, and the fledgling British press began to ask the Admiralty to send someone to search for the heroes of Franklin’s expedition. The Government sent three expeditions: one by land and two by sea, one through the Atlantic and another through the Pacific. They failed. Fearing that they would be forgotten, Lady Jane Franklin composed her lament, the song you can hear just above. And, although I don’t know if it was for that reason, the truth is that was not forgotten. In fact, the search for the lost expedition “became nothing less than a crusade.” In 1850 alone, eleven British and two American ships tried to locate them. It was then that the first tombs were found. Over the years, the different expeditions found fragments, Inuit stories and objects from the expedition. In 1855, following the indications of some Inuit tribes, pieces of wood were found with the name of Erebus. In 59 two messages were found. The first, dated May 28, 1847, was from Franklin himself and read “Sir John Franklin, Commander of the Expedition: All Well.” It is the document on the right. It was a common practice at the time, documents were left in different places so that, in case of problems, they could be reconstruct the details of the trip. But in this case, something curious happened: on the edges there was another message, dated April 25, 1848, explaining that the ships had been trapped in the ice. Franklin and twenty-three other crew members were dead. And the rest, the survivors, had abandoned the ships looking for an exit to the south. In the next few years some objects, some rumors and some tombs appeared. Nothing else. The ships never appeared and we never, in 150 years, discovered what had really happened to Captain John Franklin’s lost expedition. One hundred and fifty years without news In the 1980s, the University of Alberta launched a project to track the expedition. The different possible routes were traveled … Read more

Setting up a smart home is a nightmare. The solution is Huawei is to set it up for them

The promise of the smart home where everything works automatically without a problem sounded great, but the reality is that it is still a real chaos of incompatibilities and most annoying bugs. Even if we have all the devices from the same brand, there is still the part of assembling them, hiding cables… Huawei has the solution, although it doesn’t exactly come cheap. The complete pack They count in Panda Daily that Huawei has launched an offer of smart-home solutions that come in various packages with different devices and at various prices. The packages are designed to be installed in new construction homes and also for installation in already built homes. With these options, Huawei seeks to offer a comprehensive solution under the umbrella of your HarmonyOS system. In total they offer six packs, three for new construction homes and three for existing homes. The cheapest is the ‘starter pack’ for already built houses and costs 1,200 euros in exchange and includes the control hub and some essential functions such as lighting, air conditioning and curtain control. The most expensive packages are those installed in newly built homes. The most basic costs more than 3,500 euros in exchange and has WiFi 7 connectivity throughout the house, control of lights, curtains, air conditioning, smoke sensor for the kitchen and smart lock. The premium package goes up to almost 12,000 euros and adds features such as AI cameras, ambient lighting strips, and speakers throughout the house. All packs include installation and Huawei is committed to completing it in just 24 hours in the case of existing homes. The announcement is only for China, where Huawei had already launched similar solutions in the past. The chaos of home automation In Spain there are solutions provided by installation companies, but We do not find similar proposals through brands with smart-home devices such as Samsung or Xiaomi. Typically, we are the users who buy the devices and install them at home ourselves. Mounting cameras and lights is quite simple, but if we want deeper automation, for example controlling blinds or blinds, things get complicated and many times we have to go to an installer. Then there is the issue of compatibility. In my house I have two cameras, several lights, a robot vacuum cleaner and an automatic cat feeder. It’s not much, the problem is that each thing works with a different app and, although I can bring everything together in Google Home, the reality is that there are devices that it does not recognize, others that are deconfigured if the WiFi goes down and in general it is quite cumbersome. The standards like matter They promised to unify this chaos, but to this day it still hasn’t taken off. This same year they analyzed the topic in XDA Developerswhere they criticized that there are still many devices that do not support it and those that do sometimes lose functions compared to native integrations, as happens with Philips Hue. Returning to Huawei’s proposal, I don’t think the solution should be to buy a package worth several thousand euros and tie ourselves to a brand forever. However, the fact that it sounds like a much more convenient option than its alternatives It says a lot about the state of the connected home landscape. Image | Huawei In Xataka | Home automation and leaving for a month: Ana Boria has put all her efforts to the test just before the expected trip

In 1969, humans set foot on the Moon for the first time. He did it thanks to a computer less powerful than your cell phone

The arrival to the Moon It was one of the scientific and technological milestones most notable of the 20th century and something that remained in those who lived and in those who did not thanks to the images and audios. Something that happened more than 40 years ago, when there were still many technological revolutions to come, such as personal computers or mobile phones. What technologies made it possible for humans to reach the Moon? Something that is already fascinating in itself, but it is even more so if you know the details of the computers, cameras and other devices that were used in the mission, taking into account their characteristics. What technology made it possible for three human beings they reached the moonWould they walk around and tell us in the meantime? We travel in time and space to review. like matryoshkas The Apollo 11 mission was the eleventh of a NASA program that had a total of 22 missions (19 of them being successful), in the 1960s until 1972. Until mission 7 the launches were unmanned and mission 8 was the first to orbit the Moon, but for all of them a Saturn rocket launcher was used. The one for Apollo 11 was the Saturn V, a rocket 110.64 meters high and weighing 2,700 tons with a tank full of fuel (the largest NASA has ever built). Depending on the stage (there were three, S-IC, S-II and S-IVB) the number of engines varied and so did the fuel, which were mixtures of oxygen, kerosene or liquid hydrogen. But the Saturn V was not the one that reached the Moon, but rather the one that went out into space and directed the modules towards it. These modules were the command and service (CM) and the lunar (LEM); The CM contained the engine of the propulsion system that was responsible for entering and leaving lunar orbit and had space for three astronauts, and the LEM was the first ship designed to be able to fly in a vacuum, without aerodynamic capacity. (POT) The LEM separated from the CM as it entered the orbit of the Moon and descended to its surface. It was designed to land only on the Moon since the legs were so weak that they would not support the weight of the LEM in Earth’s gravity (9.8 m/s² versus 1.6 m/s² on the Moon). There was room here for only two astronauts. The speeds that were reached (increasing upon entering the gravitational field of the Moon) were 3,700 kilometers per hour and up to 9,000 km/h due to lunar gravity. And here comes a question: how is it possible to brake at those speeds? To enter lunar orbit, hypergolic braking was used (using hydrazine, dimethylhydrazine and nitrogen tetroxide, hypergolic compounds – which explode without a heat source) and engine shutdown. The computers of the Apollo 11 mission To review the computing involved in the Apollo 11 mission, we must take into account the emission and reception, that is, what was on the ground and what the aircraft carried. And it is also worth remembering that at the time a computer was far from being something domestic or common, or from fitting on a desk. On Earth, in the Goddard Space Flight Center and the Manned Spacecraft Center in Houston, worked with the IBM System/360 75 mainfream, which (along with the 44, 91, 95 and 195) was implemented with hardwired logic instead of microcode like all other IBM S/360 models. For the curious techieshere a configuration diagram and explanation of the team. In the ships, however, the Apollo Guiding Computer (AGC), manufactured by Raytheon and designed by the MIT Instrumentation Laboratory. This team stood out for being one of the first to use integrated circuits. There was one in the LEM and another in the CM. The specifications of these teams are surprising not because the numbers are smaller compared to the current ones, but because even making the effort to place our minds in the 1960s, it is impressive to see that teams like this managed to carry out something as complex as a round trip to the Moon. The AGC had storage of 36,864 14-bit words and RAM of 2,048 words. (POT) Comparing it with later equipment, more or less between the two AGCs they have approximately the same memory as what a Commodore-64 (from 1982) had, but it was about eight times less powerful than an IBM XT (from 1981, which was 4.77 MHz compared to 0.043 MHz for the AGC). In fact, a computer with half a GB of RAM has 100,000 times more memory than AGC. But computers do not live on hardware alone, and software here has considerable weight. 300 people participated in its creation over seven years, at an approximate cost of 46 million dollars (at the time). Among them was Allan Klumpp, a mechanical engineer at MIT whose proposal for landing on the Moon reflects all calculations as well as diagrams and drawings of the situation on the dashboard. The program was called LUMINARY and was written in MAC programming language (MIT Algebraic Compiler), but no terminal or compilation programs, this was done with some punched cards which were prepared with a kind of typewriter (and if a hole was made wrong, a new one had to be made). On the occasion of the 40th anniversary of the famous achievement, it was transcribed the code of both modules (transcribing it), where we read that Klumpp said that this was never exempt from bugs. What is notable here is the multitaskgiven that the fact that the software allowed it was already an achievement and that it was not easy for him to carry it out. In fact, there was some alarm due to the high demand on the computers as at the time of the moon landing, which resulted in a slow response and not with all the calculations, so there was one minute of the eleven that lasted the … Read more

30 years ago a young Chinese man set up an ice cream stand. Now he leads an emporium with more stores than McDonald’s

It’s hard to believe in a world dominated by big brands and multinationals, but there is a hospitality chain with more stores than McDonald’s and Starbucks that you’ve probably never heard of. His name is Mixue (Mìxuě Bīngchéng) was founded in the late 90s by a university student from Zhenghou, China, and today it is considered the largest food and beverage chain in the world. This is how it is recognized, for example, by the magazine TIMEwhich has included it in your listing of the 100 most influential companies of 2025. It is estimated that it has more than 46,000 stores spread throughout Asia, Australia, the Middle East and South America, a vast network of stores offering a menu based on ice creams, smoothies, coffees, traditional teas and bubble teas. Bigger than McDonald’s? Yes, if we talk about the number of establishments. The benefits already they are something else. While McDonald’s boasts of having more than 43,000 restaurants spread across more than a hundred countries and Starbucks managed 40,576 stores At the end of the first quarter of fiscal year 2025, Mixue surpasses (and quite comfortably) both figures. A few months ago the magazine TIME assured that the chain has more than 45,000 spread mainly throughout mainland China, although it also operates in other regions. Do you have so many stores? Yeah. Fortune calculate which exceeds 46,000 points of sale throughout Asia, Austria, the Middle East and South America. Other sources speak of more storesraising the total network to 53,000 points selling. Beyond these dancing numbers, one thing is clear: Mixue is normally considered the food and beverage chain with a greater deployment of establishments in the world. In addition, its branch network continues to expand to good If in the West its brand is less known to us than McDonald’s or Starbucks, it is because (despite the international jump that has given in recent years) most of the Mixue stores they remain focused in China. The firm also has another handicap that helps understand its global expansion: while in the case of Starbucks more than 50% of the stores are in the hands of the company itself, in Mixue practically all They operate through franchises. What is your story? Mixue’s is the typical story of improvement and accelerated growth that gives shine to the classes of coaching business. The father of the company is Zhang Hongchao, who laid its foundation almost 30 years ago from scratch. Your story starts in 1997in Zhengzhou, when Zhang, then a university student, managed to get his grandmother to lend him 3,000 yuan ($420) to set up a small slushie and soft drink stand. Despite the challenges that were encountered along the way (and some other business failure), Zhang moved forward, managed to adapt to the changes in Zhenghou, reinvested in machinery and found the key to creating a million-dollar business. Sam Tang account that his first success came in 2006, when he launched ice creams for one yuan. In 2014, its brand already had 1,000 stores. In 2020 there were 10,000. And how has it succeeded? The big question. Mixue’s business model has several clear characteristics. The first, its commercial approach. The chain basically sells ice cream. soft servesmoothies, tea drinks and bubble teasalthough in your menu coffee and Fortune assures which in the future plans to expand its offering with beer. The other great features of your menu are the affordable priceswith ice creams for less than one euro. Other peculiarities of the company are its commitment to dominate the supply chainits commitment to a clearly identifiable brand thanks to symbols such as its mascot (Snow King) and, above all, an expansion through franchises. In a report from a few months ago the company itself recognizes that almost all of its stores (99%) are opened and operate through franchises. Mixue is responsible for supervising businesses, choosing locations, decoration and assessing the capacity of the staff. For her, the business is not so much in the fee that those stores then pay as in the equipment, merchandise and packaging that she sells to them. And the future? It doesn’t look bad. In spring the company went public in Hong Kong and managed to raise nearly 450 million of dollars, starring in one of its best premieres of the first half of 2025. The company seems willing also to get into the powerful (and disputed) US market. According to precise Fortuneduring the first half of the year the company reached a revenue volume of 2,000 million dollars (40% more than in 2024) with profits of 370 million. Despite its humble origins, its founder and his brother now manage a fortune of billions of dollars. Images | Choo Yut Shing (Flickr) 1 and 2 and Jeremy Thompson (Flickr) In Xataka | One of the biggest wine critics is French and has toured China. There is no good news for French wine

We have been talking theoretically about data centers in space for months. A company already has a plan to set it up in 2027

The Californian startup Aetherflux has announced which will launch its first data center satellite in the first quarter of 2027. It is the initial node of a constellation that the company has named “Galactic Brain”, designed to offer in-orbit computing capacity powered by continuous solar energy. The underlying promise. Aetherflux presents an alternative to the years of construction that terrestrial data centers require. According to Baiju Bhatt, company founder and co-founder of the financial firm Robinhood, “the race toward artificial general intelligence is fundamentally a race for computing power and, by extension, energy.” The company is committed to placing sunlight next to silicon and completely bypassing the electrical grid. How the project works. The Galactic Brain satellites will operate in low Earth orbit, taking advantage of solar radiation 24 hours a day, something impossible on land. Advanced thermal systems would eliminate the limitations faced by terrestrial data centers, which require large amounts of water and electricity for cooling. In addition, the constellation fits within Aetherflux’s initial plans: transmitting energy from space to Earth using infrared lasers. The competition is already underway. Aetherflux is not alone in this bet. Google presented in November your Suncatcher projecta plan to launch AI chips into space on solar-powered satellites. Jeff Bezos too expressed his optimism on large data centers operating in space in the next decade or two, a goal that Blue Origin has been working on for more than a year. SpaceX also works in use Starlink satellites for computing loads of AI. Musk himself wrote in The real obstacles. Although launch costs have decreased considerably, they remain prohibitive. According to recent estimateslaunching a kilogram with SpaceX’s Falcon Heavy costs around $1,400. Google calculate that if these costs drop to about $200 per kilogram by 2030, as projected, the expense of establishing and operating space data centers would be comparable to that of terrestrial facilities. In addition, the chips will have to withstand more intense radiation and avoid collisions in an increasingly congested orbit. The urgency. Big tech is colliding with physical limits on Earth. From 2023, dozens of data center projects have been blocked or delayed in the United States due to local opposition over electricity consumption, water use and associated pollution. According to the consulting firm CBRElimitations in electricity generation have become the main inhibitor of data center growth around the world. The Aetherflux Calendar. The company, founded in 2024 and which has raised $60 million in financing, plans to first demonstrate the feasibility of transmitting space energy through a satellite that will launch in 2026. If all goes according to plan, the first Galactic Brain node will arrive in 2027. The company anticipates launching about 30 satellites at a time on a SpaceX Falcon 9 or equivalent, although if Starship becomes an option, they could orbit more than 100 data center satellites in a single launch. The long term strategy. Aetherflux hasn’t revealed pricing yet, but promise Multi-gigabit bandwidth with near-constant uptime. Their approach is to continually release new hardware and quickly integrate the latest architectures. Older systems would run lower priority tasks until the life of the high-end GPUs were exhausted, which under high utilization and radiation might not last more than a few years. Cover image | İsmail Enes Ayhan and NASA In Xataka | OpenAI launches GPT-5.2 weeks after GPT-5.1: a maneuver that aims to cut ground on Google’s Gemini 3

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