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A new technique is a dramatic breakthrough in the search for alien life, astronomers say. Researchers at the Breakthrough Listen project based at the University of California, Berkeley say they have developed a new way to be sure that any potential signal is really coming from space – and not from something more boring. Astronomers spend vast amounts of time looking for radio signals that might have come from alien civilisations as part of work on the search for extraterrestrial intelligence, or SETI. But they have in the past been fooled by very human technology, such as cellphones, microwaves and car engines, that can produce a blast of radio signals that look as if they have come from distant worlds. One way to check whether signals are really alien is to point the telescope elsewhere and then repeatedly return to the same spot, with the hope of seeing the signal again and ensuring that it is not a false alarm. But that is not foolproof – and only works if the signal sticks around. Some of the most promising radio signals might only be detectable once. The so-called “Wow!” signal, for instance – a radio signal detected in 1977 that was so shocking the astronomer who found it wrote the exclamation on a printout – has not been detected since, and astronomers still do not know whether it was an alien message or just a mistake. Now scientists have devised a new test that can be used to see whether a signal has really passed through interstellar space, which should help show that it is not from elsewhere on Earth. It works by looking for “scintillation” – the changes in amplitude of a signal as it is affected by the cold plasma of space. “The first ET detection may very well be a one-off, where we only see one signal. And if a signal doesn’t repeat, there’s not a lot that we can say about that. And obviously, the most likely explanation for it is radio frequency interference, as is the most likely explanation for the Wow! signal,” said Andrew Siemion, principal investigator for Breakthrough Listen and director of the Berkeley SETI Research Center, which operates the world’s longest running SETI program. “Having this new technique and the instrumentation capable of recording data at sufficient fidelity such that you could see the effect of the interstellar medium, or ISM, is incredibly powerful.” Dr Siemion called the breakthrough “one of the biggest advances in radio SETI in a long time” and said that it would be the first time researchers would be able to differentiate a real signal from a false alarm, even if it was only detected once. The technique can only be used for signals that have travelled 10,000 light years or more to Earth, researchers note. If it was closer to us, the scintillation effect cannot be seen because they are not travelling through enough of the interstellar medium, or ISM. The research is described in a new paper, ‘On Detecting Interstellar Scintillation in Narrowband Radio SETI’, published in The Astrophysical Journal. Read More Battery breakthroughs are about to trigger a transport revolution Huge asteroid nearly crashes into Earth – and is only spotted days later ChatGPT rival with ‘no ethical boundaries’ sold on dark web

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Eurovision, that famously camp song contest which has a strong pro-LGBTQ+ stance and has this year acknowledged Putin’s war in Ukraine as the reason for it being held in Liverpool on the country’s behalf, has blocked President Volodymyr Zelensky from making a video address - because it would breach the event’s “non-political nature”. Organisers behind the show, who on Thursday saw no issue with drag queens absolutely slaying on the M&S Bank Arena stage and preaching messages of love and acceptance, rejected the request ahead of the grand final on Saturday. In a statement, the European Broadcasting Union (EBU) – whose previous decisions to ban Russia and Belarus from participating definitely weren’t political, obviously – said the request from Mr Zelensky to address the Eurovision audience “while made with laudable intentions, regrettably cannot be granted by the European Broadcasting Union management as it would be against the rules of the event”. Belarus was disqualified from the contest in 2021 over political messaging in their planned entry (their second attempt before the deadline), while Russia was kicked out of Eurovision a year later for its illegal invasion of Ukraine. And the rules state “all participating broadcasters” must ensure that “the ESC [Eurovision Song Contest] shall in no case be politicised and/or instrumentalized and/or otherwise brought into disrepute in any way”. That’s ‘instrumentalise’ in the sense of using Eurovision as a platform to spread a political message, before anyone makes a musical pun (we know you want to)… Sign up to our free Indy100 weekly newsletter The EBU’s decision has since been criticised by Boris Johnson, the former prime minister who became a meme over how many times he’d meet with the Ukrainian president whenever he was experiencing a turbulent moment in his premiership. “It would have been right to hear from President Zelensky at tomorrow night’s Eurovision. There is only one reason the contest is not in Ukraine and that is because of Putin’s illegal war,” he tweeted. Meanwhile, Prime Minister Rishi Sunak’s spokesman told reporters: “The prime minister believes it would be fitting for President Zelensky to address the event and we’re disappointed by the decision from the European Broadcasting Union. “The values and freedoms that President Zelensky and the people of Ukraine are fighting for are not political; they’re fundamental, and Eurovision themselves recognised that last year when they rightly suspended Russia’s participation from the competition.” No 10 added, however, that they are not planning to call on the EBU to change its mind. Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.