the physics behind the most violent explosions in the universe capable of extinguishing entire galaxies

We tend to think about the stars as what we see: millions of bright dots that appear every night above our heads. However, what lies behind it is much bigger. We see light that was emitted dozens or even hundreds of years ago, coming from immense celestial objects, inside which reactions more energetic than any chemical reaction are taking place. And it is not about chemistry, but about something much more intense: nuclear fusion. The “fire” that we see from Earth is the fruit of this fusion, but there comes a time when there is no longer any fuel. With no more fuel to add to the bonfire, the star collapses and dies. This death can be cold and silent, as happens with the smallest stars, but it can also be explosive and colossal when it comes to the largest stars. After that explosion, known as supernovaa black hole or a neutron stardepends on the size of the star that died. The supernova explosion is one of the largest that occurs in the Universe. It is estimated that it releases energy equivalent to 1030 times that of the Hiroshima bomb. It is a phenomenon that releases so much radiation that even has become related with two of the five great mass extinctions that have taken place on Earth. But what makes the death of a star end up becoming something so huge? To know, we must start at the beginning. What is a supernova? A supernova is the last death of a star with a mass at least eight times that of our Sun. When runs out of fuel to continue maintaining the nuclear fusion running, it collapses, releasing a lot of energy. But this is not something that happens quickly. A massive star goes through several phases before reaching the point of generating a supernova. How is a supernova formed? Nuclear fusion is a reaction in which the nuclei of two light atoms fuse to form a heavier onewith a great release of energy. In the case of stars, this process is essential to keep them “on” during the early stages of their life, since They fuse hydrogen nuclei and transform them into helium. It occurs in all stars, although it occurs much more quickly in larger ones. While nuclear fusion occurs in the nucleus, there are two forces that remain in balance. On the one hand, gravity, which pushes all the material inward. And, on the other hand, the radiation pressure, which is generated by the effect of fusion in the stellar core and pushes outward. This occurs unchanged until the time comes when that hydrogen runs out. When spent in the core, the forces are no longer in balance. Gravity overcomes radiation pressure, so the core is pushed inward and compressed. It heats up so much that the helium that remained in the core also acquires the ability to fuse, becoming a new fuelwhich will be transformed into carbon and oxygen. But there was not only hydrogen in the core of the star. This element is also found in its outermost layers, with the difference that it remains inactive. Does not merge. Or, actually, it doesn’t at first. When this first compression occurs, with the consequent stellar heating, the outer hydrogen begins to fuse, causing the growth of the star, which becomes a red giant. Unlike smaller stars, those with a lot of mass have enough energy so they can continue fusing other atoms beyond helium. Carbon, for example, fuses to give rise to neon and magnesium. Neon does the same, generating oxygen and magnesium. That oxygen fuses to produce silicon and sulfur and, finally, the silicon atoms fuse very quickly, generating an iron nucleus. Here comes a key point, since Iron is the most stable element of all those producedso the fusion is slowed down. Cores cannot continue to merge. It is now impossible to continue generating energy and the gravity we talked about at the beginning completely defeats the star. As a result, the core collapses on itself until reaching a limit where a large shock wave is generated and the outer layers collapse, which are violently released into space. We are facing a supernova, an explosion that can last from weeks to months or years. In reality, this explosion can also occur in a binary star systemwhen one steals material from another. Therefore, when we talk about supernovas we must differentiate several types. Types of supernovae All we have seen so far is the description of the most common supernovae. Nevertheless, there are other types of supernovaewhich differ both in the nature of their parent star and in the mechanism by which the explosion takes place. Mainly, The differences are seen when analyzing their spectrum. That is, the light they absorb or emit. This is a process used to determine chemical compositions, as different elements absorb or emit light in very specific patterns of wavelengths. Type I supernova: Hydrogen is not identified in its spectrum. Type Ia: They do not have hydrogen or helium, but they do have a strong line of silicon. This indicates that they are produced by a thermonuclear explosion in a binary system, when a white dwarf accumulates additional material from a companion star. Type Ib: The spectrum does not have hydrogen, but it does have helium. It is the classic supernova that we have talked about so far. The one generated as a remnant of a neutron star or a black hole after the collapse of a large star. Typically more than 8 solar masses. It does not have hydrogen, because the outer layers of the star that contained it were lost. On the other hand, those of helium were preserved. Type IC: There is no hydrogen or helium in the spectrum. In this case, we are also facing an explosion like the one we have described so far. The only difference with type Ib is that, during the explosion, its outer layers are stripped of both hydrogen … Read more

We thought that Ozempic was only good for losing weight. Its last side effect is a brake on violent impulsivity

If there is a family of medications that has made headlines in recent years, it is the GLP-1 receptor agonists, although they will probably be more familiar to you if we say ‘Ozempic‘ either ‘wegovy‘. These drugs began by revolutionizing the treatment of type 2 diabetes, but it was all a very effective way to ‘treat’ obesity. But soon after, scientists began to notice something fascinating when they saw that patients said they also lost the desire to drink. alcoholsmoking or nail biting. After investigating it. A new studyor have taken these first indications of the suppression of impulses one step further, entering the field of crimonology and have seen that it can be a way to reduce violent crimes. To reach this point, the researchers analyzed, through a survey, 821 adults who had used GLP-1 drugs at some point. After this, the study separately analyzed current users of these medications with former users to see exactly the effect the medication can have on points that go beyond food consumption. The results. What they found is not that Ozempic “reduces crime,” but something much more subtle: in current users, the association between impulsivity traits or alcohol consumption and violent behavior was significantly weaker. That is, the drug seems to act as a buffer, since in an unmedicated person, high impulsivity combined with alcohol consumption is usually a cocktail that facilitates aggressive behavior, since something that is well proven is the relationship between alcohol and violence. But in patients under treatment with Ozempic, this transition between “feeling the impulse” and “executing the violent action” seems to be attenuated, which could prevent the transition to committing a crime of intent. Because? To understand why a metabolic drug could have behavioral effects, we have to look at the brain, since GLP-1 agonists act on brain areas involved in the reward system and appetite regulation. The clinical context of this phenomenon is increasingly documented, since a randomized, double-blind, placebo-controlled trial published in JAMA Psychiatry demonstrated that semaglutide reduced craving and several drinking metrics in adults with alcoholism disorder. This medical trial has much greater causal weight than the criminological study and provides a solid clinical basis by pointing out that GLP-1 modulates our relationship with substances and immediate gratification. With violence. With all this we can make it clear that, if on the one hand alcohol is reduced and on the other the impulsivity felt when thinking about committing a crime, indirectly two of the main catalysts of violence are being reduced. The small print. With these types of findings, it is easy to fall into sensationalism and think that we are facing the ‘Clockwork Orange’ pill. However, it must be emphasized that the published study is observational and cross-sectional in nature. This means that a kind of ‘still photo’ of the situation has been taken without following up on the participants to see how their impulsivity evolves over time. Images | David Trinks In Xataka | We thought Ozempic was only for weight loss. Science is seeing that it can end alcoholism

German scientists have discovered that the Earth has been receiving radioactive fallout for more than 100 million years due to the violent “kiss” of two supernovae.

Planet Earth is home to the ocean depths a radioactive plutonium deposit that could only be formed in space, during a violent cosmic cataclysm. Although there are reserves of this radioactive dust at great depths, it has been proven that it continues to rain down on us today. That would lead one to think that it was a recent cataclysm in astronomical terms. However, according to a recently published study by German scientistsit was hundreds of millions of years ago. Two isotopes to understand everything. Plutonium-244 does not exist naturally on Earth. In fact, the only isotope of this element that can be produced naturally in some geological processes is plutonium-239. and it does so mostly in the form of traces. Plutonium-244 is the heaviest isotope of this element. That is, the one with the most neutrons. It is known that it is usually formed by cosmic phenomena during something known as the r process, where lighter atoms quickly absorb neutrons into their nuclei. Generally, the event that usually gives rise to this phenomenon is the kilonova, an explosion resulting from the merger of two neutron stars. In the process, curium-247 is also formed, which is why these scientists have also analyzed its levels. Taking this data into account, they have discovered that the explosion in question must have occurred more than 100 million years ago, but less than one billion years ago. And, also, that the radioactive fallout has not stopped since then. The key is in the ferromanganese crust. Ferromanganese bark It is a layer of the ocean floor which is formed when metals dissolved in sea water, such as iron and manganese, are deposited and solidify. This occurs at a fairly slow rate, with growth of between 1 and 10 millimeters per million years. The deposits do not only have iron and manganese. Mixed with them are other substances that have fallen into the sea at that time. Therefore, this crust is a perfect chemical photograph of the history of our planet. A section with surprise. The authors of this study analyzed a section of this crust extracted at a depth of 4,830 meters in 1976. This had already been analyzed previously and had pointed out something surprising. And, in addition to plutonium, iron-60 was also found, another radioisotope associated with supernova explosions, which has a fairly short half-life of 2.6 million years. This figure means that, every 2.6 million years, half of the initial atoms of this isotope will have decayed. In another 2.6 million years half of what remained and so on. Since it is a fairly short half-life, it was concluded at the time that the kilonova that caused the fall of radioactive dust took place about 3 million years ago. However, the authors of the study just published debunked that hypothesis. Half-life of the study isotopes Curio to the rescue. The formation of plutonium-244 when neutron stars merge is always accompanied by the formation of curium-247. The plutonium isotope has a half-life of 81 million years, while that of curium “only” has a half-life of 15.6 million years. When analyzing the ferromanganese bark sample, these researchers found no curium. Therefore, it must have completely disintegrated. That places the explosion more than 100 million years ago. Be careful, remember that the half-life is the time it takes for half of the radioactive material to decay. Every 15.6 million years, half of it disintegrates, so in 100 million years there should be no curium left, but a lot of plutonium, which only lost half of it 19 million years ago. For plutonium to completely disappear, it would take 1 billion years. What about iron? The reason why there is iron-60 in the sample, despite having a lower half-life than that of curium-247, is that they originated in different events. In fact, the level changes of iron do not coincide with those of plutonium. On the other hand, it has been seen that plutonium continues to appear uniformly in the upper layers, hence it has been concluded that the radioactive fallout has not ended. At least it hadn’t ended in 1976 and that in astronomical terms was before yesterday. And now what? These scientists think that the cataclysm that released this long radioactive fallout must have been immense. Possibly even affected life on Earth. But at the moment it is something that cannot be known. We will have to continue investigating to have the answer. Image | University of Warwick/Mark Garlick | B. Schröder/HZDR/NASA, ESA, J. Hester, A. Loll/ASU In Xataka | Gravitational waves work their magic: we are closer to revealing the enigmas of neutron stars

A planet has just disappeared. NASA’s Hubble telescope has captured a violent cosmic event that changes everything

Investigating the universe beyond the Solar System we know sometimes brings up more questions than answers. The search for exoplanets has left findings so different from what we know as fascinating. Thus, more than a decade ago the Kepler space telescope identified the Kepler-16ba planet with “two suns” along Star Wars Tatooine and the James Webb telescope stumbled upon a world of boiling lava that paradoxically it’s colder what the theory says. In the process of investigating the universe you can witness the disappearance of a planet, as NASA’s Hubble has monitored, to discover that there was nothing like a planet: they were in front of a violent cosmic phenomenon. First they detected a bright point of light and assumed that it was a planet covered in dust where the brightness of its star was reflected. Then the object disappeared and a different bright source appeared nearby. Finally, this international research team realized that they were not seeing planets at all: the light came from incandescent debris generated by violent collisions, as they later published in Science. A planetesimal collision that changes everything In their observations in time, they captured two different and very powerful impacts that generated large amounts of dust in the same planetary system, which constitutes a magnificent opportunity to understand how planets are formed and what type of materials they are made of. Their main hypothesis: they have glimpsed not one, but two extremely rare events: one (two) planetesimal collisionthat is, a collision between small rocky objects similar to asteroids. Northwestern University astrophysicist Jason Wang explains that it is the first time they have seen a planetesimal collision outside the solar system and that its study is “key to understanding how planets form and can also provide information about the structure of asteroids, something important for planetary defense programs such as the DART test.” Paul Kalas, an astronomer at the University of California at Berkeley and lead author, insists on the exceptionality of the event: “It is not present in any of our previous Hubble images, which means that we have just witnessed a violent collision between two massive objects and a huge cloud of debris, something that has no parallel in our current solar system.” By NASA, ESA, P. Kalas, J. Graham, E. Chiang, E. Kite (University of California, Berkeley), M. Clampin (NASA Goddard Space Flight Center), M. Fitzgerald (Lawrence Livermore National Laboratory), and K. Stapelfeldt and J. Krist (NASA Jet Propulsion Laboratory) These collisions occurred in the planetary system surrounding the star Fomalhautwhich is larger than the Sun, is surrounded by an extensive and dense set of dusty debris belts and located about 25 light years from Earth, in the constellation Pisces Austrinus. That dust belt is so large that it is a real candy for research. Planet it seems, cloud of dust it is In 2008 they detected Fomalhaut b, a bright object of unknown nature that some researchers thought was a planet and others believed it was an expanding cloud of dust from a collision. Back in 2023, a new Hubble observation gave an unexpected twist to everything: the original light source was no longer there and another bright object had appeared in a slightly different area. As explains Wang, first They assumed it was Fomalhaut b, but they got a surprise: “We assumed the bright light was Fomalhaut b because it was the known source of the system. But by carefully comparing the new images with the old ones, we realized that it couldn’t be the same source. It was exciting, but also perplexing” So they had to change perspective and nomenclature: the original object was renamed Fomalhaut cs1 and its disappearance supports the idea that it was a cloud of dust that was slowly dispersing after a collision. They called the second bright source Fomalhaut cs2 and its behavior reinforces the conclusion that neither of the two objects was a planet: everything indicates that they are clouds of debris created when large planetesimals collide with each other. Investigating Fomalhaut cs2 they concluded that it looked very similar to the beginnings of cs1 from two decades ago, both in brightness and location. So the team already estimates the frequency of collisions in this guy in the system: every 100,000 years or even less. After all, in 20 years they have already seen two. Kalas explains that “if you took a movie of the last 3,000 years and sped it up so that each year lasted a fraction of a second, imagine how many flashes you would see. The Fomalhaut planetary system would be full of these crashes.” Fomalhaut cs1 no longer exists, but the research team wants to continue monitoring the system and has its eyes on cs2, which could hide more valuable information about how collisions develop in young planetary systems. Of course, in addition to the old Hubble, they will use the near-infrared camera of the James Webb Space Telescope since the NIRCam can capture detailed information about color, so they can determine the size and composition of dust grainsfor example if they contain water or ice. The confirmation of these collisions put a warning on the table for hunters of planets outside the Solar System: the gLarge clouds of dust can very well imitate the appearance of an exoplanetto by reflecting light from its star, which can lead to error using the reflected light detection system. Kalas sums it up: “What we learned from studying cs1 is that a large dust cloud can masquerade as a planet for many years.” As new observatories point to the sky to obtain direct images of Earth-like planets, differentiating between real planets and temporary dust clouds seems providential. In Xataka | Poland and Spain are the European countries that have increased their contribution to space the most. For very different reasons In Xataka | China reveals its cards for 2030: it will go in search of an “Earth 2.0” on its own Cover | Javier Miranda By ESA, NASA, and L. … Read more

Astronomers have been theorizing about “planets kamikaze.” They just found one and is 100 times more violent than it was believed

We already know A good handful of exoplanetsbut astronomers of the European Space Agency have just added a fascinating category to the catalog of strange worlds. The Kamikaze planets. Using the Cheops space telescope, The first exoplature observatory of EuropeESA researchers have first observed a planet that causes flares in their own star, a suicidal custom that will end up sealing their own destiny. The “Kamikaze planets” are actually a phenomenon of cosmic self -destruction that has been theorizing since the 1990s. But it had never been observed directly, so far. And what astronomers have seen is a hundred times more energy than anyone had imagined. A violent neighborhood. The protagonist of this story is Hip 67522, a solar system located about 490 light years from Earth. Its star is a bit larger and cold than our sun, but it is very different: while the sun exceeds median age with 4.5 billion years, Hip 67522 is a teenage star of just 17 million years. Like any teenager, this star is full of energy, with a very agitated nucleus that does not stop turning, which makes it a very potent magnet. Around this violent cosmic magnet two planets turn. The one that interests us is the closest, Hip 67522 B, a world that completes an orbit in just seven days. The planet that plays with fire. Since they began to discover exoplanets, astronomers wonder if there are worlds orbiting enough close to their star to disturb their magnetic field and, in essence, “prick it” so that great flares are unleashed. Cheops space telescope observations They demonstrated that the planet Hip 67522 B is so close to its star that its own magnetic influence interacts with that of its host. The planet acts as a whip: as the star orbits, energy is accumulated in the form of waves along the lines of the star magnetic field. When these energy waves collide with the surface of the star, they trigger a gigantic solar flare, much more violent than expected. And absolutely destructive for the planet. Up to 15 lashes captured in camera. The Cheops telescope detected a total of 15 flares, almost all produced while the planet was ahead of the star from our perspective. This synchronization is the definitive proof: the fact that the flares occur just when the planet passes between us and the star confirms that it is the planet who is causing them. The tragic part of this story is that the planet is causing these gigantic energy explosions in its own direction. Hip 67522 B is being bombarded with six times more radiation than I would receive if it would simply stay still. The planet is shrinking. According to astronomers, in the next 100 million years it could go from being a gaseous giant of Jupiter’s size to a planet of Neptune size. It is a slow -chanted cosmic suicide. Image | THAT In Xataka | Astronomers have discovered a planet that should not exist: great as a jupiter and light like sugar cotton

Sinaloa has become such a violent place that even animals flee from there

Mexico has a problem. The Drug cartels They are tremendously influential in many of the cities, it is estimated that organized crime controls the distribution of 13% of the products and the “renewed” crisis of violence has promoted New strategies by the Government. And that violence is such that animals are also suffering. Specifically, more than 700 copies that have had to leave their sanctuary looking for quieter areas. The greatest relocation of wildlife in the history of Mexico The clashes in Mexico permeate all layers. The groups compete for the territory, something that ends up affecting civiliansbut also fight against security forces. The climate of violence implies that, although in some areas there is no explicit violence, there is uneasiness and there are those who prefer not to go through the place. A few months ago, that tension caused that Some Mayan monuments will be inaccessible Because the guides did not want to play. And something similar has happened with veterinarians and caregivers who should periodically visit the animals of the Sanctuary of Ostok. Located about 25 kilometers from Culiacán, in the state of Sinaloa, the sanctuary hoste Property of criminals. In the area, these last weeks have faced two factions, ‘Los Mayitos’ and ‘Los Chapitos’, turning the city into the stage of shooting, extortion and threats that have not been alien to the sanctuary staff. As we read in CNNthere has come a point where, despite violence, employees and animals in the place had had no problem, but as one of the employees comments in the middle, more recently they have had many difficulties in reaching their job. “They practically took us out of the place because there were people who wanted to extort us,” says Ernesto Zazueta, the director of the installation. In CBS They tell how this resurgence of violence is affecting civilians more because criminals have begun not only to extort, but also kidnap and steal vehicles to obtain funds with which to continue their particular war. This theft of supplies and vehicles has prevented the activity in the park from developing as it should, and in addition to employees, animals also suffer. “There is not a single sure place in the city these days,” says Diego García, an employee of the sanctuary, in Mexico News Dailywho has had to do with some of the animals have been eating days because there were no supplies and because employees could not arrive. The highlight was when one of the elephants of the place suffered an infection that required the review by veterinarians and they refused to enter the area for fear of that violence. It is evident that everything adds, but this is what caused it to be decided to relocate the animals, as Ernesto says in W Radio Mexico. This move was made without any advertisement for fear that the members of the cartels will take over the specimens and the destination is the El Charnto Biopark, a new sanctuary that will open in August and that is in Mazatlan, about 200 kilometers from Culiacán where things seem to be calmer. To carry it out, 15 trucks were needed and were accompanied by both members of the National Guard and by veterinarians and experts in fauna management. For Zazueta, who have been forced to have to make this decision is another sign of the deep War has permeated in everyday life of civilians. And in the Facebook account of the sanctuary, the caregivers They have shown How they say goodbye to them, since they will not be the ones who take care of them from now on. Because we have talked about the Sanctuary of Ostok, but it is estimated that, since September 2024, 97 schools, 800 businesses have closed and almost 1,000 murders have been reported only in Sinaloa. Images | Ostok Sanctuary on Facebook, CCTV In Xakata | The María Islands: The “Alcatraz” of Mexico where the most dangerous criminals in the country ended

Astronomers have seen live the awakening of a giant black hole. They had never detected something so violent

Good morning, Ansky. SDSS1335+0728 was a black hole so boring that it didn’t even have a nickname. Located 300 million light years, in the constellation of Virgo, he had been asleep from our point of view. But go aroused. The supermassive black hole has aroused in such a violent way that it has left fascinated and somewhat baffled astronomers. Now it is an active galactic nucleus (AGN) dodged affectionately “Ansky”. Years of study. The galaxy where Ansky is began to shine unexpectedly in visible light at the end of 2019. Chilean astronomer Paula Sánchez Sáez, of the Southern European Observatory (ESO), leads the first team that detected activation. “When we saw Ansky illuminate in optical images, we activate monitoring observations with the NASA X -ray space telescope and review archived data of the erosite German telescope,” Paula says in a statement. “But at that time we did not see evidence of X -ray emissions.” The surprise arrived in February 2024. A second team led by Lorena Hernández-García, from the University of Valparaíso (in Chile), saw how Ansky began to emit gusts of incredibly energy and regular X-ray. “It is the first time we observed such an event in a black hole that seems to be waking up,” Lorena explains. Out of the ordinary. He XMM-Newton telescope From the European Space Agency it has allowed to measure the faint x -ray light that comes to us from the explosions, which has been key to measuring how much energy releases Ansky in each “flash”. Known as “quasiperiódicas eruptions” (QPES), X -ray emissions turned out to be ten times longer and ten times luminous than other supermassive black holes. Each eruption of Ansky releases a hundred times more energy than the Qpes observed so far. In addition, it had never seen a time between eruptions so wide, with a cadence of four and a half days. Ansky takes astronomical models to the limit and challenges our current ideas on how these flashes are generated. What causes these explosions? The most accepted theory about the QPES is that they are caused by the interaction of an object (such as a smaller star or hole) with the accretion disc (the hot and bright material that revolves around the black hole before being engulf). They usually occur when the Black hole is eaten a starbut it does not seem to be the case of Ansky. This has led the international astronomer team to consider other possibilities. Perhaps the accretion disk will be formed from gas captured from the galactic environment, and the flares are the result of highly energetic shock waves caused by a smaller object that orbit and disturbed repeatedly the disc. Gravitational waves. Notice Real Time Awakening It is an unprecedented opportunity to check if their energy eruptions could be related to gravitational waves, predicted by Einstein’s relativity and detected for the first time a few years ago. The smooth mission of ESA and NASA will try to observe these disturbances in the space-time fabric from point L1 of Lagrange after its launch in an Ariane 6 rocket planned for 2035. Image | THAT In Xataka | We knew that the supermassive black holes were huge. Thanks to James Webb, now we know we were short

Radical fans staged violent fight in Rome (VIDEO)

A violent pitched battle that is now viral on social networks. That was what happened on Wednesday night in Rome, Italy. Radical fans of the Royal Society and lazio They met and fought in the capital. At least nine fans were injured and two were stabbed and admitted to a hospital. According to information from the news agency EFEnine supporters of the Spanish team were attacked with sharp weapons by about 80 fans of the lazio. In total, the fight involved around 150 fans. The pitched battle took place in one of the streets in the center of Rome prior to this Thursday’s meeting Europa League in it Olympic Stadium. According to EFEthe incident occurred around 11 at night in an area called Leonine. At least 70 fans of the Royal Society They were in a place when 80 supporters of the lazio They approached them and began to attack them with blunt and sharp objects. In the different videos circulating on social networks you can see how a red flare cloud illuminates the entire panorama while fans threw chairs at each other and distributed goals. Even in the recordings made by local residents you can see some Italian fans with knives in hand. The brutal fight left six people injured and taken to a hospital. Two of them remain hospitalized. One with a reserved prognosis and another with recovery periods of up to 30 days. Both were dangerous. The other four fans were discharged, but the wounds resulting from the conflict can heal between five and 12 days, depending on the case. Three other injured people refused to receive medical attention, EFE indicated. At the moment, the Police managed to confiscate numerous rudimentary weapons and knives. Several fans of the radical wing of the lazio They were arrested after the conflict. Now, the Italian authorities are investigating with the aim of arresting more responsible for this incident. This is not the first time that this type of incident occurs in Europe. In fact, in September 2024, radical fans dedicated the Rome they robbed fans of the Athletic Club of Bilbao in the run-up to a match Europa League. Keep reading:· Philadelphia Eagles fan lost manager job for insulting Green Bay Packers fan· Luca De La Torre leaves Europe and joins San Diego FC for 12 months· Driver rams police car outside stadium during Playoffs between Philadelphia Eagles and Los Angeles Rams

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