Meta Platforms Inc. is expanding its WhatsApp payment feature to India, letting users in the country purchase goods

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Earth has been hit by a blast from a dead star so energetic that scientists cannot explain it. The burst of gamma rays, originating in a dead star known as a pulsar, is the most high energy of its kind ever seen. It was equivalent about ten trillion times the energy of visible light, or 20 tera-electronvolts. Scientists are unable to explain exactly what kind of a scenario could lead a pulsar to emit such intense energy, and the researchers behind the breakthrough say that it “requires a rethinking of how these natural accelerators work”. Scientists hope that they can find yet more powerful energy blasts from pulsars, with a view to better understanding how they are formed. Pulsars are formed when a star dies, exploding in a supernova and leaving behind a tiny, dead star. They are just 20 kilometres across, and spin extremely fast with a powerful magnetic field. “These dead stars are almost entirely made up of neutrons and are incredibly dense: a teaspoon of their material has a mass of more than five billion tonnes, or about 900 times the mass of the Great Pyramid of Giza,” said Emma de Oña Wilhelmi, a scientist at the High Energy Stereoscopic System observatory in Namibia that detected the blast. As pulsars spin, they throw out beams of electromagnetic radiation, throwing it out like a cosmic lighthouse. That means that someone in one spot – like the Earth – will see the radiation pulses flash in a regular rhythm as they spin past. The radiation is thought to be the result of fast electrons that are produced and thrown out by the the pulsar’s magnetosphere, which is made up of plasma and electromagnetic fields that surround the star and spin with it. Scientists can search the radiation for different energy bands within the electromagnetic spectrum, helping them understand it. When scientists previously did that with the Vela pulsar examined in the new study, they found that it was the brightest everseen in the radio band, and the brightest persistent source in the giga-electronvolts. But the new research found that there is a part of the radiation with even more high energy components. “That is about 200 times more energetic than all radiation ever detected before from this object,” said co-author Christo Venter from the North-West University in South Africa. Scientists don’t know exactly how that could happen. 
“This result challenges our previous knowledge of pulsars and requires a rethinking of how these natural accelerators work,” says Arache Djannati-Atai from the Astroparticle & Cosmology (APC) laboratory in France, who led the research. “The traditional scheme according to which particles are accelerated along magnetic field lines within or slightly outside the magnetosphere cannot sufficiently explain our observations. “Perhaps we are witnessing the acceleration of particles through the so-called magnetic reconnection process beyond the light cylinder, which still somehow preserves the rotational pattern? But even this scenario faces difficulties to explain how such extreme radiation is produced.” An article describing the findings, ‘Discovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts’, is published today in the journal Nature Astronomy. Read More ‘Ring of fire’ solar eclipse this month will be last until 2046 Mystery behind massive star suddenly vanishing decoded New discovery is ‘holy grail’ breakthrough in search for aliens, scientist say ‘Ring of fire’ solar eclipse this month will be last until 2046 Mystery behind massive star suddenly vanishing decoded New discovery is ‘holy grail’ breakthrough in search for aliens, scientist say

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ATLANTA--(BUSINESS WIRE)--Jul 14, 2023--

Logan Paul has apparently leaked text messages online regarding the conversation between him and Misfits Boxing organization's members

Facebook owner Meta is working on a ChatGPT-style chatbot with the personality of Abraham Lincoln, according to reports. The new AI bot is part of a series of prototypes under development at the tech giant, the Financial Times reported on Tuesday, with each one featuring a different human-like persona. The new chatbots form part of the company’s attempts to boost its engagement with its social media platforms, according to the report, citing people with knowledge of the plans. Beyond the chatbot based on the former US president, the California-based social media giant is also exploring a chatbot that advises on travel options in the style of a surfer. The purpose of these chatbots, which Meta employees have dubbed ‘personas’, will be to provide a new search function as well as offer recommendations. The report comes as Meta executives are focusing on boosting retention on its new text-based app Threads, after the app lost more than half of its users in the weeks following its launch on 5 July. The Facebook parent reported a strong rise in advertising revenue in its earnings last week, forecasting third-quarter revenue above market expectations. The company has been climbing back from a bruising 2022, buoyed by hype around emerging AI technology and an austerity drive in which it has shed around 21,000 employees since last fall. Meta launched a new version of its open-source artificial intelligence model in July called Llama 2 for commercial use, which will be distributed by Microsoft through its Azure cloud service and will run on the Windows operating system. Bloomberg News reported in July that Apple is working on AI offerings similar to OpenAI’s ChatGPT and Google’s Bard, adding that it has built its own framework, known as ‘Ajax’, to create large language models and is also testing a chatbot that some engineers call ‘Apple GPT’. Reports of a ‘Chat with an AI’ feature first emerged in June, when app researcher Alessandro Paluzzi shared screenshots of a new tool that offers users the option to ask questions and seek advice from up to 30 different AI chatbots on Instagram. Meta reportedly plans to launch the new AI chatbots in September. The Independent has reached out to Instagram for comment, though the company typically does not speak about unreleased products. Additional reporting from agencies Read More ‘I’ve got Elon Musk dying’: Voice clone baffles tech billionaire

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A federal appeals court has breathed new life into a rural Nevada town's unusual bid to halt government repairs to an aging irrigation canal that burst and flooded more than 500 homes in 2008