INTERNACIONAL
El misterio del oro: científicos revelan cómo se forman los elementos más valiosos del universo

Un equipo internacional de físicos nucleares logró explicar cómo se forman elementos pesados como el oro y el platino en el universo, resolviendo un enigma de más de dos décadas. El hallazgo se produjo tras una serie de experimentos en la Universidad de Tennessee y el CERN, donde los investigadores observaron detalles clave de la desintegración de núcleos atómicos inestables en el proceso de captura rápida de neutrones, conocido como proceso de captura rápida de neutrones (proceso r). Este mecanismo ocurre en eventos cósmicos extremos como la explosión o colisión de estrellas.
De acuerdo con Science Daily y la información publicada por la Universidad de Tennessee, el oro y otros elementos pesados no aparecen hasta que ciertos núcleos atómicos inestables se desintegran. Hasta ahora, los pasos intermedios de este proceso no habían podido estudiarse de forma directa debido a la inestabilidad y rareza de los núcleos implicados. Por ello, los científicos dependen de modelos teóricos, que requieren validación con datos experimentales. El nuevo estudio revela 3 descubrimientos sobre cómo estos núcleos pierden neutrones y se transforman en formas más estables.
Además, los experimentos utilizaron el isótopo raro indio-134, producido en la estación de desintegración ISOLDE del CERN. Los investigadores emplearon técnicas avanzadas de separación láser y detectores de neutrones para analizar con precisión la secuencia de desintegración y la emisión de neutrones. El trabajo, publicado en Physical Review Letters, la revista científica, abre nuevas vías para entender la síntesis de elementos pesados en el cosmos.
El proceso de captura rápida de neutrones (proceso r) es responsable de la formación de oro, platino y otros elementos pesados en el universo. Este fenómeno ocurre durante explosiones y colisiones estelares, donde los núcleos absorben neutrones en rápida sucesión. A medida que el núcleo se vuelve más pesado e inestable, experimenta desintegración beta y emite neutrones, transformándose en elementos más ligeros y estables.
Según los investigadores, la dificultad para estudiar estos núcleos radica en su rareza y breve existencia. Por esta razón, los avances recientes fueron posibles gracias a la producción de grandes cantidades de isótopos raros y a la utilización de detectores de última generación. El experimento permitió medir por primera vez las energías de los neutrones emitidos en la desintegración de indio-134, un paso para validar los modelos teóricos.
Los resultados incluyen la primera observación de un estado de neutrón de partícula única en el estaño-133, largamente predicho por los modelos pero nunca detectado experimentalmente. Según el profesor Robert Grzywacz, este hallazgo demuestra que el núcleo conserva información sobre su proceso de formación y desmiente la idea anterior de que el núcleo se comporta como “amnésico” tras la desintegración beta.

El estudio también identificó un patrón no estadístico en la población de estados nucleares, lo que desafía los modelos actuales y sugiere la necesidad de enfoques teóricos más sofisticados. La observación de la emisión de 2 neutrones, su energía y la secuencia de desintegración permiten comprender mejor cómo se producen y estabilizan los elementos pesados en el cosmos.
El descubrimiento aporta una nueva perspectiva sobre los orígenes de los elementos más pesados y refuerza el valor de la colaboración internacional en la investigación científica.
El avance científico tiene implicaciones directas para la física nuclear, la astrofísica y la comprensión de la historia química del universo. Los resultados ayudarán a mejorar los modelos sobre la síntesis de elementos en eventos estelares y a predecir el comportamiento de núcleos exóticos en condiciones extremas. Según los autores, la investigación refuerza la importancia de la colaboración internacional y el desarrollo de nuevas tecnologías de detección para explorar los límites de la materia.
científicos,oro,laboratorio,investigación,microscopio,metalurgia,química,ciencia,tecnología,análisis
INTERNACIONAL
Música para bebés cuando suenan las alarmas y preocupación por la gente mayor que no baja a los refugios: así viven la guerra los argentinos en Tel Aviv

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Iran arrests dozens accused of spying for Israel in new internal crackdown

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Iranian authorities say they have arrested dozens of people accused of spying for Israel across several provinces, according to state media reports over the weekend.
Fars, a news agency affiliated with Iran’s Islamic Revolutionary Guard Corps (IRGC), reported Sunday the West Azerbaijan prosecutor’s office had arrested 20 individuals in the northwestern city of Urmia for allegedly providing Israel with information about military, police and security sites.
On Saturday, Iran’s Ministry of Intelligence said it had arrested several «enemy operatives» across the country, including a 10-member group in Mazandaran province and another 10-member network in Khorasan Razavi province, according to Tasnim, a semi-official news agency.
Authorities said the suspects transferred the locations of military installations and economic infrastructure and shared coordinates of public places, academic institutions and research centers with Israel.
IRANIAN REGIME SPREADING ANTI-ISRAEL PROPAGANDA ACROSS DOZENS OF SOCIAL MEDIA ACCOUNTS: REPORT
Policemen stand on top of a patrol car during a rally supporting Ayatollah Mojtaba Khamenei, successor to his late father Ayatollah Ali Khamenei as Iran’s supreme leader, in Tehran, Iran, on March 9, 2026. (Vahid Salemi/AP)
In southern Khuzestan province, intelligence officials also reported arresting a three-person «terrorist team» accused of carrying out armed attacks against security forces and government facilities.
The Wall Street Journal reported last week that Israel has relied on tips from ordinary Iranians to identify targets for strikes inside Iran, citing a senior Israeli security official.
The newspaper said information about potential targets is sent through Israeli Persian-language social media accounts and is verified by Israeli authorities before strikes are carried out.
CIA URGES IRANIANS TO USE BURNER PHONES, TOR TO CONTACT US IN PERSIAN-LANGUAGE VIDEO

A woman holds an Iranian flag during the funeral and burial of Ali Shamkhani at Imamzadeh Saleh in northern Tehran, Iran, on March 14, 2026. (Majid Saeedi/Getty Images)
In a separate development, Bahraini authorities said Sunday they arrested five people accused of passing sensitive information to the IRGC and helping recruit operatives for potential attacks inside the country.
According to a statement from Bahrain’s Police Media Center, the suspects allegedly collected and transmitted coordinates and images of sensitive locations, including hotels, to the IRGC.
IRANIAN REGIME SPREADING ANTI-ISRAEL PROPAGANDA ACROSS DOZENS OF SOCIAL MEDIA ACCOUNTS: REPORT
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Officials said one suspect previously received training at IRGC camps in «trafficking persons and recruiting operatives to participate in implementing terrorist plots.»
The five detainees were referred to Bahrain’s Public Prosecution, while a sixth suspect identified in the case is believed to be a fugitive abroad.
war with iran,iran,israel,world
INTERNACIONAL
Top California librarian questioned about missing $650K tied to Dolly Parton child literacy program

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California state librarian Greg Lucas is facing scrutiny from lawmakers after roughly $650,000 tied to a statewide literacy program connected to Dolly Parton’s Imagination Library could not be accounted for.
The issue surfaced during a Thursday Senate Budget and Fiscal Review Subcommittee No. 1 on Education hearing, which examined how funds were distributed for California’s participation in the book-gifting program.
Documents shared by the subcommittee as part of its hearing agenda claim that a nonprofit created to help administer the program reported spending roughly $1.2 million, while bank statements provided to Senate budget staff showed $555,000 in expenditures, leaving about $649,000 without supporting documentation.
«I find this to be incredibly concerning,» said state Sen. Sasha Renée Pérez, D-Pasadena, chair of the subcommittee. «There’s $650,000 that’s been unaccounted for in a program, a bipartisan effort that was intended to increase literacy among children. This is incredibly serious.»
TRUMP ADMIN UNCOVERS ‘STAGGERING’ $8.6 BILLION IN SUSPECTED CALIFORNIA SMALL BUSINESS FRAUD
California state Sen. Sasha Renée Pérez speaks during a press conference at Pasadena City Hall in Los Angeles County on June 23, 2025. (Sarah Reingewirtz/MediaNews Group/Los Angeles Daily News via Getty Images)
State Sen. Shannon Grove, R-Bakersfield, also criticized the lack of documentation, saying the situation raised serious concerns about transparency and oversight.
«That makes no sense,» Grove said during the hearing. «And that reeks of horrific no transparency and potential fraud.»
The California state library did not immediately respond to Fox News Digital’s request for comment.
Lawmakers said Senate budget staff had requested financial records from the Strong Reader Partnership, the nonprofit created to help administer the program, multiple times, including receipts, invoices and bank statements to corroborate expenses.
EX-NONPROFIT BOSS ALLEGEDLY SWIPED $1.2M MEANT FOR HOMELESS PROGRAMS TO FUND LAVISH LIFESTYLE, DA SAYS

Senate Bill 1183, signed in 2022, created California’s statewide Dolly Parton Imagination Library program, which sends free books to children from birth to age 5 to encourage early literacy. (Noah Sauve/iStock Editorial via Getty Images)
According to the subcommittee, those requests were made on several occasions between November 2025 and February 2026, but the documentation had not been provided.
During the hearing, Lucas acknowledged that lawmakers had received bank statements accounting for roughly $555,000 in spending but disputed the claim that the funds were unaccounted for.
«I don’t believe that’s correct,» he said. «I mean, we received a final report on the disposition of the money by the Strong Reader Partnership, which has expressed, and we’ve passed this on to you as well, the difficulty in obtaining some of this information because they no longer have any money or members of the partnership since the money was transferred to the Imagination Library.»
He added that his agency has repeatedly asked the nonprofit for additional records and pledged to continue requesting the information.
PROPOSED CALIFORNIA WEALTH TAX DRIVES BILLIONAIRE EXODUS TO FLORIDA REAL ESTATE, LOCALS CONFIRM

Members of the California state Senate, during a hearing on education, speak with Greg Lucas, California’s top librarian, on March 12, 2026. (Credit: California State Senate)
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A spokesperson for the state library told ABC10 in a statement: «The California State Library takes seriously its responsibility to ensure transparency and accountability in the taxpayer dollars entrusted to it. The State Library has provided the Legislature with all documentation in its possession and has repeatedly requested additional records from the Strong Reader partnership. The California State Library remains committed to cooperating fully with all legislative oversight and maintaining accountability in the administration of public funds.»
Pérez gave Lucas seven days to produce the financial records, saying the subcommittee expected invoices and receipts detailing how the money was spent.
california,education,politics
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