unique

Spacex has just published unpublished images of the “Rostized” Starship. A unique perspective of his shock after the toughest reentry

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Spacex shared new images of the Starship In its tenth test flight, where he managed to complete the reentry and controlled ameter In the ocean despite visible damage in the vehicle. The material spread by Spacex shows the ship at a key moment: the moment of its spareness in the Indian Ocean, dyed of an orange tone after surviving a specially demanding reentry. A key test. The tenth test flight departed on August 26 from Starbase, in Texas, with an impeccable takeoff thanks to the 33 super heavy engines. The separation of stages was also successful and the propeller managed to merit in the ocean, fulfilling its role before the starship continued its trip to space. The milestones in space. Once separated from the propeller, the Starship carried out a complete combustion that placed it in its suborbital trajectory and allowed to validate several key tests. Among them, the deployment of eight Starlink satellite simulators and the second redempted in the history of a Raptor engine in space, two milestones that Spacex considers essential for the development of future missions. Click to see the original publication in x The challenge of the reentry. The reentry was the most critical point of the mission. Spacex had already chained several failed attempts. This, in a way, had questioned the capacity of the vehicle to survive this phase. This time, the ship faced extreme conditions with part of its incomplete thermal shield and the flaps subjected to a deliberate effort. Even with visible damage in the rear skirt, the Starship managed to maintain control and move towards its destination. Spacex’s message. Moments ago, Spacex published a message in which he summed up the scope of what was achieved: “Starship exceeded the reentry with missing tiles intentionally, she completed maneuvers to force her flaps, suffered visible damage in the rear skirt and flaps, and still executed a turn and a landing ignition.” Despite these conditions, the ship managed to preserve sufficient maneuverability to go accurately towards its field of shock in the Indian. The image released next to the statement reinforces that idea. The starship, imposing on the launch platform with all its intact thermal tiles, now appears with a very different appearance: blackened, with a coppery tone that makes it seem almost “roasted” after passing through the atmosphere. Spacex has not explained the exact reason for this change, although on the Internet they have not taken to appear theories. A millimeter closure. The mission culminated with the Starship gently threading in the Indian Ocean, approximately three meters from the planned area. For Spacex, the value of the flight is not that the ship can be reused, but in what has been learned during the test. Each data collected in extreme conditions approaches the company to its goal of developing the first large -sized launcher fully reusable. In Xataka | The “Wow!” Signal signal It was even more powerful than astronomers calculated: half a century later, the mystery is complicated

Zaragoza witnessed this weekend of a most unique weather event: a supercell

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From an extreme drought that ravaged the Iberian Peninsula for more than a year we have passed to a few months during which the extreme phenomena have come characterized by intense rainfall. We have seen various rainfall records beaten and we have also seen the most tragic face of these events. A new extreme event. Although it will not come with the destructive power of other storms, the province of Zaragoza has witnessed during the weekend of a new extreme event, A supercell. Supercells are storms with defined characteristics that make them a kind of miniature cyclone. They are more typical of areas such as the great plains of the United States than from Spain, but on Saturday the Aragonese could witness one of these storms. On Sunday, the State Meteorology Agency (AEMET) maintained yellow alerts for adverse phenomena in a good part of the area between the Ebro Valley and the Pyrenees. Notices that materialized in intense storms. The same day, Aemet shared through its social networks some images of this unique storm. Supercells are intense but not completely strange phenomena: similar events were also recorded in the region, according to explained at the time The local press. On that occasion, the storms came to cause a blackout in the city of Huesca, He pointed to the HERALDO DE ARAGÓN. What exactly is a supercell? Supercells are storms With an organized structure. In them, an ascending current transports, sometimes with high speeds, warm air from the surface to higher areas. There, the warm and humid air joins the cold and dry air, which leads to rainfall that can be intense and result in hails. The coexistence of an ascending and another descending current is one of the characteristics of these storms. One that also implies that these types of events can be extended for a certain time. This encounter between warm and cold air has another effect: it makes the storm turn. This triggers another of the characteristics of this type of storms, a mesocyclone, that is, an intermediate cyclone. From hail to tornadoes. According to explains the geographer Pedro de la Fuente to Meteoredthis type of storm involves risks derived from their rainfall and the winds associated with them. These adverse phenomena include hail, which can reach an important size; floods, as a consequence of rainfall, or important bursts of descendant wind. One of the most striking effects of this type of storms are, however, tornadoes. These are not frequent, even when these types of storms occur, but they can be one of the most relevant consequences of the supercells. From Ebro to the Mediterranean. If the storms in the Ebro valley have been protagonists during the weekend, the Mediterranean could take over on Thursday, Meteorologists point out. The storms could affect in particular the southern zone of the Valencian Community, as well as Murcia, Albacete and east of the province of Cuenca. In Xataka | “One of the most extreme phenomena in history”: meteorologists are dismayed before the heat wave of Africa and Asia Image | Matthieu pron

In the exciting world of the supernovas this newly discovered has something unique: its form is perfect

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Identifying a Supernova is an event that astronomers usually celebrate with enthusiasm. And it is not for less if we consider that it is One of the most violent events with which we can run into the cosmos. Knowing them better is very important because it can help us understand more precisely what the latest stages of The life of mass starsand also the mechanisms that explain how the material caused by stellar synthesis can lead to new star systems. The mathematical tools handled by astrophysics current nuclear fusion that take place in the nucleus of mass stars. During the stage known as the main sequence, stars obtain their energy from the fusion of hydrogen nuclei. As this chemical element is consumed, the star begins to produce helium nuclei, and, of course, its composition begins to evolve. During this process a huge amount of energy is released and the star is forced to continuously readjust to maintain hydrostatic balance, a phenomenon that is the result of the coexistence of two opposite forces capable of compensating. One of them is the gravitational contraction, which compresses the subject of the star, pressing it without rest. And the other is the radiation and gase pressure, which is the fruit of the ignition of the nuclear oven and tries to expand the star. ‘Teleios’ is the perfect supernova If the star is massive enough will begin to consume its helium reserves and produce new carbon nuclei, while maintaining the hydrostatic balance we have talked about. And if the star has enough mass will not stop in carbon production. When this element is exhausted in the nucleus, it will be readjusted, compressing and increasing once again its temperature to stop the gravitational collapse. From this moment the carbon nuclei will enter into ignition through nuclear fusion processes and the production of even heavier chemical elements will begin. While in the star’s core is being carried out Carbon fusionin the immediately superior layer the ignition of the helium is maintained. And above this, of hydrogen. The iron core suddenly contracts under the enormous pressure that all layers of material that it has above the material exerted on it During star nucleosynthesis, stars acquire a layer -shaped structure similar to that of an onion. In the nucleus lies the heaviest element, and from there we are ascending by layers finding more and lighter elements. If the star has accumulated sufficient mass there will come a time when the nucleus will be essentially constituted by iron, and from this chemical element it is not possible to obtain more energy through nuclear fusion processes. At that time the radiation and gase pressure is not enough to counteract gravitational contraction, so Iron core suddenly contracts under the enormous pressure that all layers of material that it has above. The star has lost the hydrostatic balance. At this moment all this matter loses the support that the nucleus exercised, which is now much more compact, and falls on it with enormous speed. When all that star material touches the surface of the nucleus there is a rebound effect that causes it to be fired with a huge energy towards the stellar medium, being disseminated. A supernova has just been produced. Some of them are so energetic that for a few seconds they emit more light than the entire galaxy that contains them. This was probably what happened to ‘Teleios’, the remnant of a supernova recently discovered by an astronomer team from the University of Sidney (Australia). The remnant is nothing more than the material that is spread in a region of space after the production of a supernova In the field of Supernovas, the remainder is nothing more than the material that is scattered in a region of space after the production of a supernova. It usually acquires the shape of an expanding bubble in which it is possible to identify an external and brilliant region in which the shock wave and a diffuse interior section occurs constituted by dense and cold dust and dust. The image we publish on the cover of this article recreates a supernova in the most reliable way possible, and in it we can clearly observe the two regions in which we have just inquired. Astronomers from the University of Sidney have identified the remnant ‘Teleios’ using the Australian Askap telescope (Australian Square Kilometre Array Pathfinder), and have realized something very interesting: its geometry is almost perfectly circular. It is very unusual that the material left after the production of a supernova acquires such a perfect geometry. Although these astrophysics shuffle several scenarios that could explain this morphology, in Your scientific article They propose to carry out more observations to determine why ‘Teleios’ is so different from other remnants. The identification of the conditions that have given rise to this cosmic object can help cosmologists to understand better What happens during the production of a Supernova and what parameters delimit the evolution of the remnant that will remain in space long after this great explosion occurs. In fact, these Australian astrophysicists have estimated that ‘Teleios’ is at a distance between 7,170 and 25,100 light years. Image | Generated by Xataka with Dall-e More information | Arxiv In Xataka | The CERN detector took 20 years to be built. It is one of the most complex machines created by the human being

‘The Eternaluta’ is a masterpiece of science fiction. But the story of its creator gives him an absolutely unique background

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Netflix’s new science fiction series, ‘El Eternalauta’, has a very emotional story for comic fans: not only is it based on a legendary cartoon whose adaptation to cinema and television has been frustrated on countless occasions, but its creator owns a biography that makes its humanistic background, but tragic. This is the story of ‘The Eternaluta’ and its creator, Héctor Germán Oesterheld. The production that opens Netflix is ​​an Argentine series, such as the original comic, and has the prominence of an international fame actor like Ricardo Darín. It has occurred under the supervision of one of Oesterheld’s grandchildren and is the end point of a long list of attempts to adapt a comic that in Argentina has an extraordinary fame. Hence the prestige of the directors who tried to adapt it on previous occasions. In 1998, he assumed the Adolfo Aristarain project (‘A place in the world’, ‘Martín (Hache)’) among other directors such as Gustavo Mosquera (which ended, yes, embarking on a long journey to stand up a biopic of Oesterheld, which has not yet curdled). The project was frustrated due to lack of financing. In 2008 the possible adaptation was reactivated, in a film that would direct Lucrecia Martel (‘The Holy Girl’). Martel distanced himself from the project due to conflicts with the Oesterheld family and the adaptation was canceled. Finally, Netflix began the production of its ‘eternalauta’ in 2020although the filming was interrupted by the pandemic. THE IMPORTANCE OF ‘THE ETERNAUTA’ With a very modern point of view, the story of Oesterheld, drawn in its first phase, in 1958, by a superb Francisco Solano López, tells an extraterrestrial invasion that begins when a mysterious lethal snow on contact with the skin annihilates most of the human beings. The offensive will increase with the appearance of insectoid beings, cascarudes, servants of higher intelligences that will unleash a mixture of intrigue and action where we will have even walks through parallel dimensions. Cascarudos are not the last border of the alien invasion: the protagonist and an impromptu land resistance group will face an alien disturbing who has numerous fingers around the hand (which wins his appeal of hand), and that It is only the servant of even superior and unknown aliens. It would be said that Oesterheld senses an alien presence in the way of Lovecraft, with entities for those who do not assume the slightest threat, but nods them at our level and injects them very understandable intentions. This stage is published in Spain By comic planet. ‘The Eternaluta’ Illustrated by Solano López The adventures of ‘The Eternaluta’ would not end there. A decade later, in 1969, and with Radicalized Oesterheld in his political commitment, the author would script By Penguin). It essentially tells the same story, but with explanations for the invasion much more politicized. Later, in 1976, an official sequel would arrive, set in a desolate and apocalyptic future, a consequence of the ravages we saw in the first installment. I would draw her again Solano López. After her, with missing Oesterheld, we would see multiple sequelae, often with the participation of the original cartoonist. But … What does ‘the Eternaluta’ have to have become an absolute classic of the Argentine comic? When Oesterheld did not know what his destiny would be, the first ‘eternauta’ can be read as a local version of ‘The War of the Worlds’, but with bulls references to the policy of the moment: In 1955 Perón had been expelled from the Argentine government in a coup d’etat led by military. This first version of history is more humanistic than politics, and as Roberto Bartual details In your newsletter on comics And he launches the message that “there are good and bad on all sides”, allowing even demonstrating some compassion for the villains. It has all the meaning that this white and harmless version is the one that takes the Netflix series as a reference. ‘The Eternaluta’ Illustrated by Breccia However, the authentic combative content of ‘The Eternaluta’ would come in the second version that Oesterheld would re-guide and illustrate Breccia: in it, invading aliens have reached a pact with foreign powers. In the 1969 version, the villain of history is imperialism that a few years later would cause coups in Chile in 1973, and later again in Argentina, in 1979. The humans of this version of ‘El Eternalauta’ are the countries of Latin America fighting for their independence. And there is more. The sequel ‘El Eternalauta II’, again with Solano López to the drawings, tells how men and women live in caves to escape the invasion. It is impossible not to think about the authentic oesterheld, which This second part of ‘The Eternaluta’ ended in hiding. The end of the story is absolutely bleak and turns the iconic eternal, with his diver glasses to protect himself from lethal snow, an anti-authoritarian resistance symbol. Even much later, in the demonstrations against the Financial Corralito at the beginning of this century, posters were seen with the images of the Eternaluta remembering their rebel spirit and, above all, denouncing the leaders of any sign that betray their own. ‘El Eternalauta II’, illustrated by Solano López Oesterheld’s fate The radicalization of the creator of ‘The Eternaluta’ would start shortly after the publication of the first version of the story: Oesterheld would begin to fill their stories of criticisms of capitalism and colonialism, reaching a script to political sign as clear as a biography of Che in 1968, before his collaboration with Breco. In the seventies he would join the Montoneros (the second part of ‘El Eternalauta’ ended in hiding, dictating the scripts he later received Solano López, exiled in Spain), and the last thing that was learned of him is that he was arrested in 1977 by the military dictatorship. It was last seen in a clandestine detention center, and as happened with so many other Argentines, from that moment to be part of the list of arrested and missingvictim of Argentine state terrorism. … Read more

Low intensity magnetars are among the most unique objects of the cosmos. We are now discovering their secrets

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The Magenetares They are among the strangest objects in the universe. The key characteristic of these neutron stars is their magnetism, but understanding the origin of this is not so simple. Explaining magnetism. Now a new study He has revealed That the origin of the magnetism of some magnetares, the so-called “low intensity”, is found in a phenomenon we call Tayler-Spruit dynamo. The new job, explain those responsible, resolves a mystery emerged more than a decade ago. Of low intensity. Magnetares are neutron stars, objects of great density that arise after the outbreak of some supernovae that give the death of large mass stars. These objects are characterized by their magnetic fields although, as we have discovered in recent years, these fields are not always comparable. Low intensity magnetares objects have between one and 10 tera-gauss (between 0.1 and 1 giga-tesla), which is one or two orders of magnitude lower than what was used to be considered defining in the “classic” magnetars. Despite this low intensity, this type of magnetar produces x -ray emissions similar to conventional ones. The important difference in the intensity of the magnetic fields of one and the other have led astronomers to press that the magnetism of each other has a different origin. Simulating a star. To understand what was happening in low intensity magnetars to generate their peculaires magnetic fields, the team responsible for the new study He turned to a numerical simulation with which they modeled the magnetic-thermal evolution of these objects. They observed a “dynamo process” (called Tayler-Spruit) that was given in the proto-strolle of neutrons, a process capable of generating low intensity fields from movement such as those observed in this type of stars. Relapse. According to Explain the responsible teamthe key is in the birth of these neutron stars, in the explosions of the supernovas in which they originate. As the model shows, the great of the star expelled in the outbreak ends up falling back to the new neutron star, which makes this faster unleashing this dynamo of Tayler-Spruit The details of the work were published In an article In the magazine Nature Astronomy. Five of 30. Magnetars are objects on which we still have much to learn. To illustrate this a fact can be useful: to date we have only discovered about thirty of these objects in the immensity of the observable universe. Of these only five are what we call low intensity magnetars. In Xataka | The James Webb has just shown us some waves of colossal stars that would make our solar system small Image | NASA Goddard Space Flight Center Conceptual Image Lab

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