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Scientists have spotted an infrared aurora on Uranus that could help us find alien life. On Earth, aurorae are best known in the form of the northern lights, when bright light streaks across the sky. Uranus also has its own aurora – though it is not visible in the same way, because of the different atmosphere on that planet. Researchers have known about ultraviolet aurorae on Uranus since 1986. But now scientists have confirmed there are infrared aurorae on the distant planet, too. Scientists hope that the findings could help explain the magnetic fields of other planets in our solar system. And it could help us find out whether distant planets support alien life. Aurorae happen when charged particles arrive at a planet and hit its atmosphere, brought down through its magnetic field lines. To better understand those on Uranus, researchers analysed the light from the planet and watched for a specific charged particle that changes brightness depending on how how it is and how dense the atmosphere is, so that it can be used as a thermometer. The researchers found that the density of that particle significantly increased, which suggests they are being ionised by an infrared aurorae, they say. Scientists hope that will inform our understanding of other, similar planets, as well as which worlds might be suitable for alien life. “The temperature of all the gas giant planets, including Uranus, are hundreds of degrees Kelvin/Celsius above what models predict if only warmed by the sun, leaving us with the big question of how these planets are so much hotter than expected? One theory suggests the energetic aurora is the cause of this, which generates and pushes heat from the aurora down towards the magnetic equator,” said Emma Thomas from the University of Leicester, who was lead author on the new study. “A majority of exoplanets discovered so far fall in the sub-Neptune category, and hence are physically similar to Neptune and Uranus in size. This may also mean similar magnetic and atmospheric characteristics too. By analysing Uranus’s aurora which directly connects to both the planet’s magnetic field and atmosphere, we can make predictions about the atmospheres and magnetic fields of these worlds and hence their suitability for life. “This paper is the culmination of 30 years of auroral study at Uranus, which has finally revealed the infrared aurora and begun a new age of aurora investigations at the planet. Our results will go on to broaden our knowledge of ice giant auroras and strengthen our understanding of planetary magnetic fields in our solar system, at exoplanets and even our own planet.” The findings might also help explain a mysterious phenomenon on Earth known as geomagnetic reversal, where the north and south pole switch around. Scientists still know very little about that rare phenomenon, and how it might affect things such as satellites and communications. That process happens every day on Uranus, however. Researchers hope they can use its aurorae to get better data on the nature of that reversal – and what might happen if Earth has one, too. The findings are described in a new paper, ‘Detection of the infrared aurora at Uranus with Keck-NIRSPEC’, published in Nature Astronomy. Read More People don’t know their Uranus from Eridanus when it comes to astronomy Scientists find surprise ‘layer’ underneath surface of Mars Scientists see huge explosion in space – and it could explain life

CORVALLIS, Ore.--(BUSINESS WIRE)--Oct 4, 2023--

WASHINGTON (Reuters) -President Joe Biden's administration is holding a joint classified briefing for members of the U.S. Senate Intelligence and

Bruno Fernandes threw his support behind Andre Onana and told the devastated Manchester United goalkeeper to stop blaming himself for the Champions League defeat at Bayern Munich. Having been beaten in three of their first five matches for the first time in the Premier League era, the Red Devils’ return to European football’s top table ended in a 4-3 loss on Wednesday night. Erik ten Hag’s men started the Group A opener surprisingly well at the Allianz Arena, only for summer signing Onana to somehow let a low Leroy Sane shot squirm home. The 27-year-old buried his head in the turf and was consoled by team-mates, later saying he “let the team down” and that United “didn’t win today, it’s because of me”. “It’s not about Andre,” United skipper Fernandes said. “Andre is a great goalkeeper. “He will keep giving us a lot of points, a lot of saves. He hasn’t to take any blame for nothing. “We have to take the blame as a team, that we’re going to go through this moment together because we are strong as a team.” Onana’s gaffe was swiftly followed by a Serge Gnabry strike, with Harry Kane then scoring a penalty straight after Rasmus Hojlund had pulled one back early in the second half. The match came to a hectic conclusion, with Casemiro scoring either side of Mathys Tel’s stoppage-time strike as United showed spirit but ultimately lost for a fourth time in five matches. “I think what everyone has to do is to do their own job and look at themselves first,” Fernandes said in the bowels of the Allianz Arena. “That’s what I do as a player, not as a captain – as a person and first point. “I think everyone does that and I think today it wasn’t the case that not everyone was doing the best for the team or trying to fight for getting the result. I think everyone did that. “It’s just the momentum and against big teams, as I said, when you give a lot of chances to them, they’re going to hurt you. “Even then they give us some chances and we scored three goals, so I think no-one would expect us to come into Bayern and score three goals. “I don’t think anyone outside of us would expect us to fight for the result in trying to get something from the game. “But I think the team did. Obviously it wasn’t enough but we’re not playing against some bad team. “We were playing one of the best teams in the world, with great players, with great qualities. “Obviously it’s not the best moment for us but we will get through this and we will get the results back.” United stayed in Germany following the Group A opener and are training before flying back as preparations step up for Saturday evening’s key trip to Burnley. Ten Hag will be hoping to have more options to choose from at Turf Moor, having headed to Bayern without nine injured players. “Obviously, we want to have everyone back because we know that as many players we have available, the team will be stronger,” Fernandes said. “And obviously more options for the manager to do his choices and whatever his tactics, the first 11 or whatever he picks. “But obviously, still, we have the players and we have enough experience and enough talent in the team to get through this moment even with all the players. “Obviously now I think some of them probably will come back earlier and will lift the team because we have quality players injured. “But it’s about the ones that are now playing, giving something to get the result and that’s it. “We can’t rely now on the injuries and everything. “We know it’s tough and you need to get through that because you can’t control (it). “But I think the team has players (good) enough to get a response.” Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live Son Heung-min believes Arsenal should fear in-form Tottenham Ryder Cup by the numbers On This Day in 2008 – United States end European dominance with Ryder Cup win

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