special

The impact probability of asteroid 2024 YR4 has risen to 1.6%. The UN has already activated a special protocol

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In just a few days of observations, the probability that The 2024 YR4 asteroid Impact with the Earth has risen from 1.2 to 1.6%. Once otherwise, there is a 98.4% chance that the newly discovered object passes by long. But the risk of not doing so is high enough for the UN to activate, for the first time, its planetary security protocol. Revised calculations. 2024 YR4 was discovered on December 27 by the latest land impact alert system (Atlas) from Chile, but did not caught the attention of astronomers until it automatically appeared on the NASA Sentry list on December 31 by its impact risk (then just above 1%) with the planet Earth. According to the Updated data which published yesterday the Coordination Center of Objects close to Earth (NEOCC) of the European Space Agency (ESA), the 2024 YR4 asteroid measures between 40 and 90 meters in diameter and has a 1.6% chance of impacting with the Earth on December 22, 2032. He would do it near Ecuador, at some point that goes from northern South America to northern India, passing through central Africa. Meetings in NASA and ESA. We can agree that the probability of impact is still very small, but has put in suspense the Space Missions Planning Advisory Group (SMPAG) of the UN, the committee that coordinates the response to asteroids of more than 50 meters with an impact probability of more than 1% in the next 50 years. With the planetary security protocol officially activated2024 YR4 has triggered, for the moment, two SMPAG meetings. One with the NASA Planetary Defense Coordination Officeand another in Vienna with the experts of the ESE Planetary Defense Office. What the experts have decided. Actively observe the asteroid and meet again at the end of April or early May (or before, if the risk of impact increases significantly) to reassess the situation. The probabilities can change in favor or against time as astronomers make more observations and refine the calculations of the asteroid trajectory. If the asteroid remains greater than 50 meters and the probability of impact is maintained above 1% for the next meeting, the SMPAG will issue a recommendation on future actions to the United Nations External Space Affairs Office (oneo). We will definitely need offices with acronym that is easier to remember if Armageddon comes true. We have some practice. Let’s not forget that humanity has already successfully diverted an asteroid. NASA did as proof of concept in September 2022 with the Dart mission, a ship that Dimorphos’ trajectory slightly divertedthe small moon of the asteroid Didymos. The European Mission Hera He now goes there to study the impact result. Everything we can learn from this test (And the one that China will do in a few months) It could make a difference in future planetary defense missions, the case may be. Images | Astrophyscia Institute of the Canary Islands, NASA/JPL In Xataka | Dart has been a success. The question is whether it will really save us when an asteroid goes to Earth

What is special Depseek, the new Chinese artificial intelligence tool (and how differs from chatgpt or gemini)

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Image source, Getty images January 28, 2025 Updated 7 hours Deepseek, the new Chinese artificial intelligence model (AI), has shaken the digital world, dazzling investors and sinking the actions of some technological companies, after jumping to the top of application downloads in Apple Store. It was launched on January 20 and quickly captivated computer science before attracting the attention of the entire technology and world industry. The president of the United States, Donald Trump, described the phenomenon as an “alarm call” for companies in that country that must concentrate on “compete to win.” What makes Deepseek so special is the statement of its creators that it was produced at a fraction of the cost of other models in the avant -garde of the industry such as the OpenAi chatgpt, because it uses less advanced technology chips. That possibility caused the giant of the production of Chips Nvidia to lose almost US $ 600,000 million of its market value this Monday, the fall in a more loud day in the history of the USA. Deepseek also generates doubts about Washington’s measures to contain Beijing’s impulse to achieve technological supremacy, which includes export restrictions of advanced chips to China. However, Beijing has redoubled its efforts with President Xi Jinping declaring AI as the main priority. And the new companies such as Deepseek are crucial as China turns a traditional manufacturing of clothing and furniture to advanced chips technology, electric cars and AI. Here we tell you what it is. What is Deepseek? In simple terms, Depseek is a chatbot enhanced by AI, like chatgpt. It is a free application that can be downloaded from the Apple Store store, where Depseek states that it is designed “to answer your questions and enhance your life efficiently.” But the AI ​​model that drives it – called R1 – has about 670,000 million parameters, which makes it the largest open source language model to date, according to Anil Ananthaswamy, author of WHY MACHINES LEARN: The Elegant Math Behind Modern AI (“Why do the machines learn: the elegant mathematics behind the modern AI”). Image source, Getty images Photo foot, Hangzhou, where the Depseek operations center is located, also houses other Chinese technological giants such as Alibaba. It is said that it is as powerful as OPENAI’s O1 model, which enhances Chatgpt, in mathematics, coding and reasoning. It is also claimed that he is able to do all that in a much cheaper way; Its developers claim that building it cost $ 6 million, an austere budget compared to the billions invested by AI companies in the US. It is not clear how they got it. The founder of Deepseek supposedly stored advanced NVIDIA chips before his export to China was prohibited in September 2022. Experts believe that this provision, which some estimate in 50,000, allowed him to build such a powerful model when these chips with other cheaper and less sophisticated. How do you compare with chatgpt or gemini? Deepseek looks and feels like any other chatbot, although it leans more towards conversation. Like Openia or GEMINI Chatgpt of Google, you can open the application (or its website) and ask questions about anything, and the chat strives to give you an answer. Your answers are extensive, but you don’t issue an opinion even if you ask you directly by one. The chatbot usually begins by saying that the issue is “highly subjective” -it is politics (is Donald Trump a good president?) Or soft drinks (which one knows better, Pepsi or Coca -Cola?). He does not even commit to saying whether or not it is his rival Chatgpt, but he did a comparison of the pros and cons of both artificial intelligences. Chatgpt did exactly the same, using a similar language. Image source, Reuters Photo foot, Apparently and operation, Depseek is very similar to other rival chatbots. Deepseek indicates that it was trained with data until October 2023 and, although the app seems to have access to updated information, the web version does not have it. That is similar to the first versions of Chatgpt and is probably a similar protection attempt, to prevent chatbot from launching incorrect information to the web in real time. It can also respond quite fast, although it is currently a little stop under the load of so many users running to try it since it went viral. Chatgpt and Gemini tend to promote their subscription services, which can be around US $ 20 per month, for more detailed information, while Deepseek is free although more limited. Censorship of Taboo themes Where there is a palpable difference is in Depseek’s self -censorship when it comes to prohibited issues in China. Sometimes it starts an answer that then disappears from the screen and is replaced by a notice that says “let’s talk about something else.” The obvious taboo theme are the protests in the Tiananmen Plaza in 1989 that ended with the death of 200 civilians at the hands of the Army according to the Chinese government, but some media estimate that it resulted in a massacre of thousands. Like many other Chinese models of AI -Rernie de Baidu or Doubao by Bytedance- Deepseek is scheduled to evade politically sensitive questions. When the BBC asked the app what happened in Tiananmen Square on June 4, 1989, Deepseek did not give detail some about that documented massacre. He replied: “I’m sorry, I can’t answer that question. I am an assistant to the designed to provide useful and harmless answers.” Photo foot, Deepseek evaded the question that BBC asked him about what happened in Tiananmen Square in 1989. For their part, their Chatgpt and Gemini rivals had no taps to expand in this regard. It is believed that one of the great challenges for the development of AI in China is the censorship of the government. But it seems that Depseek has been trained around an open source model, which allows you to perform complex tasks, while retaining certain information. Who is behind Depseek? Deepseek … Read more

wants to overthrow Einstein’s special theory of relativity

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Quarks, the elementary particles that make up the protons and neutrons of the atomic nucleus, are fermions. And electrons, too. There are several types, although physicists like to talk more about ‘flavors’: above (up), below (down), charm (charm), strange (strange), top (top) and background (bottom). The most frequent in ordinary matter are the up and down quarksalthough the one that interests us the most in this article is the top quark for a very interesting reason: it is the heaviest elementary particle that we can find in nature. An interesting note given that we are moving in the field of fermions: supersymmetry is a theoretical model of particle physics that proposes the existence of a hypothetical particle that is paired with each of the fundamental particles that we know. It seeks to explain the existing relationship between the bosonswhich have a spin with an integer value, and fermions, which have a half-integer spin. However, it is important that we do not overlook that it is a hypothetical theoretical framework that, therefore, has not yet been observed in nature. Not even experimentally. CERN has investigated whether the top quark respects the special theory of relativity The quantum mechanics and the special theory of relativity formulated by Albert Einstein constitute the heart of Standard Model of particle physics. Until now, this theory by the popular German physicist has stood the test of time undaunted, but scientists do not miss the slightest opportunity when it comes to putting it in trouble. And it is ideal because it is one of the most effective strategies when what is sought is to go beyond the solid walls of the Standard Model in the hope of develop new physics. Some specific models of string theory propose that at very high energies special relativity will no longer be valid. Lorentz symmetry lies at the very core of this model. Broadly speaking, this property justifies that the experimental results are independent of orientation and speed with which the experiment is carried out in the space-time continuum. It seems like a complicated concept, but if we think about it a little carefully, it is not so complicated. Be that as it may, what is really important is that so far all the experiments that physicists have carried out have supported Lorentz symmetry. However, and here comes the most interesting part, some theories, such as specific models of string theory, propose that at very high energies special relativity will no longer be valid and experimental observations will depend on the orientation of the experiment in space. -time. If so, the Lorentz symmetry would be broken. On paper, it should be possible to identify this break in the energy level that physicists work with in the CMS particle detector from CERN (European Organization for Nuclear Research). For months, CMS experiment researchers have meticulously analyzed the properties of the top quark pairs produced in the collisions at the LHC (Large Hadron Collider). And their result is very interesting: the production rate of top quark pairs remains constant even though the direction of the LHC’s proton beams and the average direction of the top quarks produced in the experiment change depending on the time of day due to the Earth’s spin on its axis. This means that there is no preferred direction in the space-time continuum capable of conditioning the production of top quarks. And, therefore, the Lorentz symmetry is still intact. And the special theory of relativity is still valid. Image | CERN More information | ScienceDirect In Xataka | “If we achieve our goal, a revolution in physics will be unleashed”: we speak with Santiago Folgueras, physicist at CERN

The 30 most fabulous jewelry and watches to get the most special gifts

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At Christmas time, there are many fashion details that flood our heads, such as, for example, knowing what looks to wear on all our datesthat is, lunches and dinners with friends and family. But there is also the great dilemma of what to give for Christmas or Three Kings. Here, we present 30 jewels and watches with which you can surprise and get a great treasure that will always accompany you. 132 © Bvlgari Iconic snake shape Elegant and innovative coiled snake-shaped earrings made of 18-karat rose gold. It is about the Serpenti Viper from Bvlgari (3,600 euros). 232 © Chanel floral detail Sophisticated necklace Camélia Extrait in 18-carat pink gold and 0.05-carat brilliant-cut diamond, from Chanel (3,150 euros). 332 © Cartier With three shades elegant ring Trinity medium size that mixes bands in white gold, rose gold and yellow gold, from Cartier (2,130 euros). 432 © Piaget With 36 diamonds Clock Polo Date with steel case, dial with 36 brilliant-cut diamonds, sapphire case back and interchangeable bracelet, from Piaget (16,100 euros). 532 © TOUS jelly beans effect Bracelet TOUS Color Bear Lgg 17.5 centimeters, in sterling silver and lilac synthetic sapphires created in the laboratory in the shape of a bear, from TOUS (800 euros). 632 © Pandora For pearl lovers From the collection Pandora Momentsfreshwater cultured pearl earrings with sterling silver, from Pandora (99 euros). 732 ©Louis Vuitton A unisex jewel Symbolizing infinity, so this ring is perfect for a couple. Le Damier large in yellow gold and diamonds, from Louis Vuitton (9,900 euros). 832 © Rado In black and diamonds The clock Centrix Diamonds classic quartz, with a polished stainless steel bracelet with yellow gold PVD coating and a black faceted dial with 12 diamonds, from Rado (2,500 euros). 932 © Viceroy With exclusive design Steel earrings with a unique dent finish that will surprise you, from Viceroy (35 euros). 1032 © Bulova With luxurious precision and 11 diamonds Clock Surveyor Lady 11 diamonds with three hands, steel case enhanced with Two-tone Rose Gold and coordinated bracelet, from Bulova (289 euros) 1132 © Recarlo Shine on your wrist Bracelet Anniversary in 18-carat white gold and brilliant-cut natural diamonds, from Recarlo (3,680 euros). 1232 © Pomellato Byzantine heritage Sophisticated earrings Iconic Inspired by the Byzantine era, with a wide hoop in 18-karat pink gold and enhanced with 6 peridots, from Pomellato (8,400 euros). 1332 © Tissot With long strap in trendy color Clock Bellissima Small Lady – XS with a diameter of 26 millimeters, stainless steel case, Swiss quartz movement, mother-of-pearl dial and adjustable turquoise leather strap, from Tissot (445 euros). 1432 © Damiani Romanticism with amethysts Original flower-shaped ring in rose gold and enhanced with brown diamonds and amethyst, from the collection Margherita by Damiani (from 2,590 euros). 1532 © Swarovski For the perfect guest Collection earrings Mesmeradrop-shaped and made with crystals set in claws in a rhodium plating, from Swarovski (119 euros). 1632 © Messika Making a difference From the collection Move Oneyellow gold necklace with diamonds, one of them arranged to move with the movement, from Messika (1,990 euros). 1732 © Patek Philippe Elegance with color Clock 4910/1201R – Twenty-4 Violet engraved and lacquered dial, rose gold case set with 34 diamonds and rose gold bracelet, from Patek Philippe (47,600 euros). 1832 © RABAT Three diamond wishes 18K rose gold ring with three central diamonds (representing three wishes) and pavé diamonds with a total weight of 0.87 carats, from the collection Three Wishes from RABAT (2,900 euros). 1932 © Tudor Lifelong Rejo Tudor Royal with a 28-millimeter steel case and elegant diamond-set dial, from Tudor (5,650 euros). 2032 © Swiss Union A detail of color Sophisticated white gold ring with diamonds (0.20 carat weight) and drop-shaped sapphire (0.31 carat), from Swiss Union (1,935 euros). 2132 © Chaumet In geometric shape Earrings Bee My Lovewith hexagonal shapes in white gold and enhancement with daimants, from Chaumet (3,130 euros). 2232 © Dinh Van with links With a length of 17.5 centimeters, elegant bracelet Maillon Petit of links, made of 18-carat yellow gold and diamonds, by Dinh Van (2,300 euros). 2332 © Rolex Timeless elegance Sophisticated watch with Oystersteel, Everose gold, diamonds that frame the mother-of-pearl dial and Jubilee bracelet. It is about the Lady-Datejust from Rolex, a purchase for life (CPV). 2432 © Blancpain With the lunar cycles Stunning automatic watch in red gold with folding clasp, from the collection ladybird from Blancpain (65,000 euros). 2532 © Suarez Jewelry Eighties wink Collection ring Gentlewith silhouette bombed from the 80s, made of yellow gold and with a brilliant-cut central diamond detail, from Joyería Suarez. 2632 © One of 50 A handmade jewel with white topaz Double hoop earrings in sterling silver and enhanced with a white topaz in the center. This jewel, made in Spain with a completely artisanal process, belongs to the collection Be indomitable from One of 50. 2732 © Longines Swiss precision Clock conquest with a round stainless steel case and sapphire crystal, and a delicate light blue rubber strap, from Longines (2,200 euros). 2832 © Roberto Coin like a venetian princess Earrings Venetian Princess button adorned with malachite and diamonds, and made of 18-karat gold, from Roberto Coin (3,950 euros). 2932 © Omega In time with diamonds in Nevada Clock De Ville Ladymatic with 18-carat Sedna gold, pearly white mother-of-pearl dial, bezel covered with snowfall diamonds and leather bracelet, from Omega (34,900 euros). 3032 © Gold&Roses New York inspiration Collection earrings Skyline made of 18-karat pink gold and white diamonds, from Gold&Roses (1,470 euros). 3132 © José Luis Jewelry Pure distinction Choker Omega in 750 thousandths gold, oval shape, reversible with diamond face and smooth face and long, from José Luis Joyerías (5,399 euros). 3232 © Swatch Luminous minimalism Clock Just White Soft with polished lines, with a soft dial and black details, from Swatch (60 euros).

We discover their most special accessories

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In the exact 10 years that Maximum is crowned as the queen of the netherlandshas given us countless fashion postcards royal that will go down in posterity for their originality, color and elegance. This is not entirely due to their spectacular gala dressesequipped with transparencies, volumes or sequins, nor the historical jewels of the Orange. © Getty Images They are his headdresses, be they hats, fascinators, turbans or beretswhich distinguish many of the Dutch woman’s most memorable looks. Máxima escapes from traditional silhouettes in favor of high impact designs adorned with feathers, XXL rosesamong other details. Below, we review some of their captivating poses with headdress. 116 © GTRES © GTRES The hats he has in more than seven colors Not all of Máxima’s headdresses are adorned with feathers, crystals or flowers. In fact, one of her favorite designs to wear on her head is rather minimalist in comparison: she has purchased this wide brimmed hatmolded slightly upwards, by Fabienne Delvigne, in more than seven different colorssuch as beige, gray, red, violet, brown, pale pink or fuchsia. These images date back to January 15, 2024, when he visited the headquarters of Royal Cosun, a company that won the King William I Award. 216 © GTRES wide brim To start October 2024 on the right foot, Máxima participated in the inauguration of the new building of the National Ballet Academy. (NBA) in Amsterdam and there she recycled an olive green Shantung midi dress signed by the Belgian label Natan. Since the rest of the accessories were gray, she opted for a stiff hat in pearl gray felt, from Fabienne Delvigne, her trusted milliner. This type of wide brim headdressesknown as fedorais among the queen of the Netherlands’ favorites for rainy days. 316 © GTRES Butterflies Every April 27, it is celebrated in the Netherlands King’s Daya day that is used to celebrate the birthday of King William Alexander, who celebrated his 57th birthday in 2024. In view of the special nature of this date, Máxima took out one of her most impressive and eccentric headdresses from the closet. Work of Berry Rutjes, it is filled with green butterflies held by a thick headband lined with beige satin. His choice was a nod to the province of Emmen: “City of Butterflies”. 416 © GTRES feather headdresses At the inauguration of the new outpatient clinic of the Dutch Endometriosis Clinic, last September, Máxima left us speechless by wearing on her head a creation that recreates the shape of a beret, but which she wore as a cap and is covered with feathers with wild motifs in reference to birds, butterflies, among other natural elements, in tune with their autumnal tones with the crepe tile set. It comes from the study of Jolandathe maid of the Dutch queen, and we know this because she had already worn it on two other occasions since 2015. 516 © GTRES An abstract cap During your trip to JakartaIndonesia, in March 2020, just days before confinement was declared in many European countries, Máxima made headlines for this spectacular style in which, against all odds, her flowered cape dress, the work of Natan, did not He was the only protagonist. She accompanied it with cognac-colored accessories; among them, an original raffia cap with wavy edges. The final touch was Queen Juliana’s aquamarine set, which she complemented with the family diamond bracelet. © Getty Images The ‘wildest’ Of all the guests wedding of Princes William and Stephanie of Luxembourgin 2012, Máxima was the one who undoubtedly received the most praise from fashion critics for her groundbreaking choice of headdress: It looks like a bird, but it’s just a ‘wild’ creation of feathers painted in earth tones. © Getty Images black velvet At the end of 2023, at the celebration of the thirtieth anniversary of the Home-Start organization in the Netherlands, Queen Máxima showed off one of her most memorable headdresses: this felt hat with large bowwork of Philip Treacyhatter of the royalswhich he wore three times during that year. In the image, it is paired with a sober gray knit dress by Dolce & Gabbana. © Getty Images The XXL rose with tulle ruffles The enthronement Naruhito from Japan She left us with great moments of royal fashion, among which this one from Queen Máxima stands out. Dressed in a beautiful blue dress with floral embroidery, by Natan, the Dutch woman caught everyone’s attention thanks to her giant flower headdress handmade by the Fabienne Delvigne house. It is the same one he wore at his daughter Alexia’s baptism 15 years ago, although at that time it was even more voluminous: some tulle nets completed this creation. © Getty Images A giant hand-painted rose On the third Tuesday of September the so-called Prince’s Dayone of the national dates designated for Máxima. In 2023, she decided to coordinate the headdress with her coat with a digital print of hand-painted flowers, the work of Claes Iversen, whose scalloped edges are shaped like petals, using a large XXL rose-shaped hair clipwhich was hand painted by the Berry Rutjes brand with copper tones that take center stage in the look. © Getty Images A Kenyan crown Máxima’s first look in his last trip to Kenya was dominated by the color yellow thanks to this relaxed outfit, by Max Mara, which premiered on June 6, 2011… 12 years earlier! Not only did these XL raffia and glass bead earrings catch our attention, Mangoin yellow, which simulate the silhouette of a daisy, but the traditional Kenyan hatwhich was granted to him by the authorities of the African country during his visit. A two-tone crown-shaped headdress. © Getty Images A peculiar umbrella The Dutch queen appeared in the Federal Parliament of Germany, in 2018, with this impressive flower headdress from Berry Rutjesinspired by the myth of Apollo and Daphne. Although he was not debuting it that day, he took it for the first time at Ascotits spectacular nature meant that no one could take their eyes off … Read more

This is the 2014 special edition half dollar coin worth up to $3,500

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In 1964, the United States Mint issued a 50-cent “Kennedy” coin in memory of President John F. Kennedy a year after his tragic assassination, but In 2014, a special edition was produced that commemorated the 50th anniversary of his death.and this piece has become one of the most coveted by collectors. Recognizing this coin is very simple, on the obverse you can see Kennedy’s profile face, designed by Gilroy Roberts, chief engraver of the Mint, and on the reverse, the President’s Seal, authored by Frank Gasparro. It has the Denver “D” mintmark and it is estimated that there were approximately 197,608 copies. This currency It is not only sought after by collectors for its historical importance, but also managed to receive the highest grades from the Professional Coin Grading Service (PCGS): MS-64: up to US$10 dollars. MS-64: up to US$11 dollars. MS-66: up to US$14 dollars. MS-67: up to US$32 dollars. MS-68: up to US$110 dollars. MS-69: up to US$250 dollars. MS-70: up to US$3,500. This particular piece was analyzed by experts who determined that It was in excellent condition with no scratches, dents, stains or wear. Keep reading: –What is the buffalo nickel coin worth more than $100,000 like?–1888 Cent: A Valuable Treasure That Could Fetch More Than $38,000-The eye and the pyramid of the $1 bill: its true meaning

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