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

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Angry protesters called congressman George Santos a “dog killer” on Friday as the Republican made an appearance at a Long Island federal court house, his first hearing since pleading not guilty last month to a13-count indictment related to fraud and money laundering charges. The chants were in reference to an alleged scandal in which the representative allegedly made off with more than $3,000 raised in a fundraiser to save a disabled US Navy veteran’s service dog, one of the many alleged acts of deception Mr Santos made as he worked towards his spot in Congress. The first-term congressman has denied knowing about veteran Richard Osthoff or his dog, calling the allegations “fake.” As Mr Santos exited court, Mr Osthoff, who was in the crowd, yelled, “You killed Sapphire, George. You killed my dog.” Others in the crowd reportedly chanted, “Resign” and “Shame” as the Republican passed by. Mr Santos was in court for a status conference on the federal case against him, where he faces 13 different charges, including fraud, money laundering, and theft of public funds. Prosecutors charge the New York rep mislead supporters and donors into giving him money, which he allegedly used for personal expenses that funded a lavish lifestyle. They also claim he misleadingly obtained unemployment benefits and lied about his personal finances when campaigning for the House of Representatives. Mr Santos has admitted to lying about certain aspects of his background, and is accused of fabricating everything from his education background to his religion to his career success. In court, Mr Santos did not speak, but his lawyers claim he and the government have exhibited a “wonderful working relationship” so far. The defence also said the prosecution has given them 86,000 pages of evidence to go through. The next court date for Mr Santos is 7 September. Outside of the federal case against him, Rep Santos is also under investigation by the House Ethics Committee. Read More Santos reveals names of two $500,000 bond cosigners ahead of court-ordered release Aide fired by George Santos says he got his job after sending money to Republican's deputy Effort to expel Santos falters as Republicans vote to send measure to Ethics Committee Watch: George Santos returns to court after fraud and money laundering charges AP News Digest 3:05 a.m. Rep. George Santos set to appear federal court on fraud and money laundering charges

WASHINGTON Top Biden administration officials on Friday rejected a decision by Moody's ratings agency to downgrade its U.S.

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Colombia’s largest rebel group says it will stop attacks on the nation’s military as it prepares for a ceasefire with the government that could bring both sides closer to ending five decades of war

After returning to New York from Oslo in late May, Harley Hendrix noticed her suitcase containing a cherished

RICHMOND, Calif.--(BUSINESS WIRE)--May 25, 2023--

Margot Robbie has been dropping hints about what Barbie fans can expect from the new Greta Gerwig film - including a few Easter eggs. The star appeared on the red carpet last night (9 July) for the film's premiere, where she reminisced over one of her favourite moments. "There's a moment where Ruth Handler, who created Barbie, and the Barbie I play meet and when she hands her a cup of tea our hands touch like the Michelangelo", she says, referencing the famous 'The Creation of Adam' artwork. Click here to sign up for our newsletters

SANTA BARBARA, Calif.--(BUSINESS WIRE)--Aug 22, 2023--

In today's MLB rumors, the Cardinals eye an ace in Chicago, the Braves contemplate trade options, and the Astros could part ways with a beloved star.