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Charlespen

02 Sep 2024 - 11:17 am

‘Dyson spheres’ were theorized as a way to detect alien life. Scientists say they’ve found potential evidence
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What would be the ultimate solution to the energy problems of an advanced civilization? Renowned British American physicist Freeman Dyson theorized it would be a shell made up of mirrors or solar panels that completely surrounds a star — harnessing all the energy it produces.

“One should expect that, within a few thousand years of its entering the stage of industrial development, any intelligent species should be found occupying an artificial biosphere which completely surrounds its parent star,” wrote Dyson in a 1960 paper in which he first explained the concept.
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If it sounds like science fiction, that’s because it is: Dyson took the idea from Olaf Stapledon’s 1937 novel “Star Maker,” and he was always open about that. The late scientist was a professor emeritus at the Institute of Advanced Study in Princeton, New Jersey.
Still, coming from a thinker who some in the scientific community say might have been worthy of a Nobel Prize early in his career, the concept took hold and the hypothetical megastructures became known as Dyson spheres, even though the physicist later clarified that they would actually consist of “a loose collection or swarm of objects traveling on independent orbits around the star.”

In his paper, Dyson also noted that Dyson spheres would give off waste heat detectable as infrared radiation, and suggested that looking for that byproduct would be a viable method for searching for extraterrestrial life. However, he added that infrared radiation by itself would not necessarily mean extraterrestrial intelligence, and that one of the strongest reasons for searching for such sources was that new types of natural astronomical objects might be discovered.

“Scientists (at the time) were largely receptive, not to the likelihood that alien civilisations would be found to exist, but that a search for waste heat would be a good place to look,” said George Dyson, a technology writer and author and the second of Dyson’s six children, via email. “Science fiction, from ‘Footfall’ to ‘Star Trek,’ took the idea and ran with it, while social critics adopted the Dyson sphere as a vehicle for questioning the wisdom of unlimited technological growth.”

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01 Sep 2024 - 02:50 pm

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Josephshata

01 Sep 2024 - 07:36 am

A year on from Qatar 2022, what’s the legacy of a World Cup like no other?
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The 2022 World Cup final will go down as one of the most exciting, dramatic and memorable matches in the history of the game.

It was the scene of Lionel Messi’s greatest moment on a soccer pitch, in which he cemented his legacy as the best player of his generation after finally guiding Argentina to World Cup glory.

It was, for many, the perfect, fairytale ending to a tournament which thrilled well over a billion fans around the world. So good, perhaps, that many forgot it bookended the most controversial World Cup in history.
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Rewind to the start of the tournament and the talk was all about matters off the field: from workers’ rights to the treatment of the LGBTQ+ community.

Just hours before the opening match, FIFA President Gianni Infantino launched into a near hour-long tirade to hundreds of journalists at a press conference in Doha, where he accused Western critics of hypocrisy and racism.

“Reform and change takes time. It took hundreds of years in our countries in Europe. It takes time everywhere, the only way to get results is by engaging ] not by shouting,” said Infantino.

At one point, the FIFA president challenged the room of journalists, stressing FIFA will protect the legacy for migrant workers that it set out with the Qatar authorities.

“I’ll be back, we’ll be here to check, don’t worry, because you will be gone,” he said.

So, a year on from the World Cup final, what is the legacy of the 2022 World Cup?

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01 Sep 2024 - 06:08 am

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01 Sep 2024 - 04:49 am

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