TL;DR: A wide range of online artificial intelligence courses are available to take for free

Astronomers have found a planetary system with six different worlds that orbit in a strange rhythm. The set of planets move around their star in a rhythmic beat, scientists say, staying synchronised in a kind of dance. The findings could help shed more light on how planets form and evolve, the researchers say. The star is smaller, and slightly dimmer than the Sun, and the six “sub-Neptunes” - possibly smaller versions of Neptune in our solar system - move in a cyclic rhythm. According to the experts, this orbital waltz repeats itself so precisely it can be readily set to music. The star, HD110067, is 100 light-years away in the northern constellation of Coma Berenices, and had perplexed researchers for years. Now scientists, including those at the University of Warwick, have revealed the true architecture of this unusual system using Nasa and European Space Agency (Esa) spacecraft. The analysis was led by University of Chicago scientist Dr Rafael Luque, who said: “This discovery is going to become a benchmark system to study how sub-Neptunes, the most common type of planets outside of the solar system, form, evolve, what are they made of, and if they possess the right conditions to support the existence of liquid water in their surfaces.” The first indication of planets orbiting the strange star system came in 2020, when Nasa’s Transiting Exoplanet Survey Satellite (Tess) detected dips in the star’s brightness which suggested planets were passing in between the star and the spacecraft. A preliminary analysis revealed two possible planets - one with a year (the length of time it takes to complete one orbit around the star) of 5.64 days, and another with an unknown period at the time. Two years later, Tess observed the same star again, and analysis ruled out the original interpretation but presented two additional possible planets. Much was still unknown about the planetary system, until scientists across the world - including those at the University of Warwick - joined the investigation. They used data from Esa’s Characterising Exoplanet Satellite (Cheops), hoping to determine the orbital periods of these faraway planets. While multi-planet systems are common in the Milky Way, those in a tight gravitational formation known as “resonance” are observed by astronomers far less often. In this case, the planet closest to the star makes three orbits for every two of the next planet out - called a 3/2 resonance - a pattern that is repeated among the four closest planets. Among the outermost planets, a pattern of four orbits for every three of the next planet out (a 4/3 resonance) is repeated twice. Thomas Wilson, from the Department of Physics at the University of Warwick, said: “By establishing this pattern of planet orbits, we were able to predict other orbits of planets we hadn’t yet detected. “From this we lined up previously unexplained dips in starlight observed by Cheops and discovered three additional planets with longer orbits. This was only possible with the crucial Cheops data.” Researchers say the planets - two to three times the size of Earth - are likely to have been performing this same rhythmic dance since the system formed billions of years ago. Dr Luque said: “We think only about 1% of all systems stay in resonance, and even fewer show a chain of planets in such configuration.” Experts say orbitally resonant systems are extremely important to find because they tell astronomers about the formation and subsequent evolution of the planetary system. Planets around stars tend to form in resonance but can easily have their orbits thrown around. For example, a very massive planet, a close encounter with a passing star, or a giant impact event can all disrupt the careful balance. Therefore, multi-planet systems preserving their resonance are rare. HD110067 is the brightest known system with four or more planets. Since those planets are all sub-Neptune-sized with likely larger atmospheres, it makes them ideal candidates for studying using the James Webb Space Telescope (JWST) and the Esa’s future Ariel telescope. Mr Wilson added: “All of these planets have large atmospheres - similar to Uranus or Neptune - which makes them perfect for observation with JWST. “It would be fascinating to test if these planets are rocky like Earth or Venus but with larger atmospheres - solid surfaces potentially with water. “However, they are all much hotter than Earth - 170C to 530C - which would make it very difficult for life to exist.” Hannah Osborne, a PhD student at UCL’s Mullard Space Science Laboratory and a co-author of the study, said: “The system itself is a key discovery for exoplanet science: because all six planets are in a resonant chain we know that the architecture of the system can’t have changed much since its formation, so by studying HD110067 we get a rare window into the past to understand how these types of systems may have formed and evolved.” The findings are published in the Nature journal. Additional reporting by Press Association Read More Astronomers find unprecedented ‘disc’ around distant planet Astronomers discover new six-planet system Scientists have cooked ‘alien haze’ that could help find life Astronomers find unprecedented ‘disc’ around distant planet Astronomers discover new six-planet system Scientists have cooked ‘alien haze’ that could help find life

A three-person tribunal has recommended against the firing of a Georgia teacher who is at risk of being terminated after reading a book about gender identity to her fifth grade class, according to the teacher's attorney.

NEW YORK--(BUSINESS WIRE)--May 17, 2023--

Elon Musk will force companies on X to pay at least $1,000 (£770) per month in order to keep their verified status on the platform. From 7 August, any brand that does not pay the fee to the company formerly known as Twitter will lose the gold check mark that appears next to the account name. The latest strategy, which was first reported by The Wall Street Journal, comes amid declining ad revenues and fresh competition from text-based platforms launched by Meta and TikTok. Mr Musk responded to the report by stating that brands could also pay $1,000 per month for a verified organisation subscription. “This more than pays for itself in organic reach,” he posted on X. “The reason for the $1,000/ month is to set a moderately high bar to be a verified org, so that an org must be of non-trivial size to qualify and to make it expensive for scammers to create millions of accounts.” Earlier this month, the tech billionaire revealed that the company was suffering from negative cash flow issues after advertising revenue dropped by 50 per cent following his $44 billion takeover of the platform. Mr Musk has undertaken aggressive cost-cutting measures, which included firing more than 6,000 employees. He has also appointed former advertising executive Linda Yaccarino as the firm’s CEO in an effort to woo advertisers. The rebranding from Twitter to X could also open up new revenue streams, with Mr Musk planning to transform the social network into an “everything app” similar to China’s WeChat. X has already secured money-transmitting licences in three US states, which will allow payments to be integrated into the platform. Ms Yaccarino said on Monday that she believed X represented “the future state of unlimited interactivity”, integrating audio, video, messaging, and the ability to book and pay for goods and services. Powered by AI, X will connect us all in ways we’re just beginning to imagine,” she posted on X. “For years, fans and critics alike have pushed Twitter to dream bigger, to innovate faster, and to fulfil our great potential. X will do that and more.” Read More What is Elon Musk’s ‘everything app’ X? Elon Musk takes control of @X account from user who had held it for 16 years Elon Musk’s ‘X’ is already trademarked by Mark Zuckerberg What is Elon Musk’s ‘everything app’ X?

South Africa is likely to prioritize energy security over its decarbonization aspirations to avoid further damage to its

KAWASAKI, Japan--(BUSINESS WIRE)--Sep 13, 2023--

Quizlet is a study aid in app form. In essence, it's a flashcard app with

Photographers with an artistic eye, as well as wedding and portrait specialists, have likely at

Elon Musk has revealed new details about the next major test flight for SpaceX’s Mars-bound Starship rocket, which he claims is ready to launch. SpaceX is still awaiting approval from the Federal Aviation Administration (FAA) to launch the biggest rocket ever built, with the US regulators currently undertaking a “mishap investigation” for the previous Starship launch in April. The 400-foot-tall (121 metre) rocket exploded over the Gulf of Mexico just three minutes into a planned 90 minute flight on 20 April, breaking up into pieces over the water. An inadequate launchpad was also destroyed by Starship’s huge engines, blasting concrete chunks and metal shards across a 700-acre area. The SpaceX boss had predicted that the rocket would explode, saying ahead of the attempt: “I am not saying it will get to orbit but I am guaranteeing excitement.” The tech billionaire is more hopeful for the latest launch attempt, having made several key changes to how it operates. “We are doing a new staging technique called hot staging where you light the upper stage engines while the booster stage is still firing,” Mr Musk told the All-In Podcast this week. This is the most efficient way to do stage separation of a rocket going to orbit but we did not try that on the last mission... I think, I hope, we have a well over 50 per cent chance of getting through stage separation, and maybe a close to 50 per cent chance of getting to orbit if the hot staging separation method works. “I’d say it’s above 50 per cent chance of getting to orbit this time, whereas previously I said below 50.” Once in orbit, Starship will travel around the planet before splashing down in the Pacific Ocean just north of Hawaii. The Starship rocket is currently fully stacked at SpaceX’s Starbase facility in Texas, though it is not clear how long the private space firm will have to wait before receiving FAA approval. “The SpaceX Starship mishap investigation remains open,” the FAA said in a statement last week. “The FAA will not authorise another Starship launch until SpaceX implements the corrective actions identified during the mishap investigation and demonstrates compliance with all the regulatory requirements of the licence modification process.” Read More SpaceX launch of Starship rocket on hold amid ‘mishap investigation’ SpaceX launch of Starship rocket on hold amid ‘mishap investigation’ Starship ‘ready to launch’, Elon Musk says SpaceX smashes rocket launch record as Musk eyes historic Starship mission

Hackers have reportedly stolen $35 million in cryptocurrency from users of Atomic Wallet. According to

WhatsApp is changing the way billions of users log into the messaging app, ditching passwords and two-factor authentication in favour of quicker and more secure passkeys. The move is part of a major shift within the tech industry to move away from decades-old password technology and replace it with the more modern passkey format, which combines biometric information like fingerprints with a simple numeric code in order to identify people. A similar switch was recently announced by Google, which will introduce passkeys to its apps like Maps, Search and YouTube. WhatsApp’s update will only impact Android users to begin with. “Passkeys are a new way to log back into your account,” said Will Cathcart, who heads WhatsApp. “This is a more secure way of confirming it’s really you – and gives you an added layer of security.” WhatsApp is also rolling out self-destructing voice notes to users as part of new measures to improve privacy on the world’s most popular messaging app. The update is currently only available for beta tester users who have the latest version of WhatsApp installed on their phone or computer, though it is expected to eventually be introduced for all users. With more than 2.7 billion users worldwide – the majority of which on Android devices – WhatsApp updates typically need to be introduced gradually in order to make sure any potential security bugs do not have a critical impact. The self-destructing audio messages, first spotted by WhatsApp feature tracker Wabetainfo, is compatible with both Android and iOS users, though no date has been given for when a wider roller out might be expected. WhatsApp does not comment on release schedules for feature updates unless they relate to security. “After sending the voice note with view once mode enabled, you won’t be able to listen to it and the recipient can no longer listen to the voice note after dismissing it,” Wabetainfo noted. “This mode effectively minimises the chances of unauthorised access or later listening, providing a new layer of privacy for sensitive and confidential information.” The latest update follows recently added features like ‘Channels’, which allow people to follow celebrities and companies within the app, and a ‘Create’ button that gives users the ability to make custom art on the platform. The Create feature brings generative artificial intelligence to WhatsApp for the first time, and means users do not require external tools or specific design skills to create the stickers. Instead, the custom stickers can be produced using simple text-based prompts, similar to other AI image generators like Midjourney and OpenAI’s Dall-E. Read More Facebook and Instagram users face monthly fee for ad-free version Meta launches AI chatbots with ‘personalities’ to take on ChatGPT Viral WhatsApp warning of cyberattack targeting Jewish people is fake Amazon trials humanoid robots to see if they can help staff warehouses Tesla’s profits dip as Musk goes on rant about staff working from home