They may not be as stylish as a DeLorean or as sturdy as a blue police box, but wormholes in space could hold the key to real-life time travel – and a team of experts think they’ve figured out how. The trio of scientists delved deep into the laws of physics and discovered that it might be possible for humans to one day zip across galaxies in a matter of seconds, or journey through time itself. Now, this is all to do with the general theory of relativity and quantum physics, so don’t expect to get your head around it too easily. However, in their paper, Valeri P. Frolov and Andrei Zelnikov of Canada’s University of Alberta, and Pavel Krtouš of Prague’s Charles University proposed that a specific kind of wormhole would “inevitably” be “transformed into a time machine” if it was subject to particular conditions. Sign up for our free Indy100 weekly newsletter For the uninitiated, wormholes can be described as spacetimes in which a “kind of tunnel exists connecting distant parts in the universe”. The main problem with them is… they don’t actually exist. At least not in any tangible way. As Drs Eric Christian and Louis Barbier put it in an explainer for NASA: “Wormholes are allowed to exist in the math of ‘General Relativity’, which is our best description of the Universe. “Assuming that general relativity is correct, there may be wormholes. But no one has any idea how they would be created, and there is no evidence for anything like a wormhole in the observed Universe.” Still, numerous experts in the field of gravitation and general relativity have spent years or even decades working on them, including Stephen Hawking in his time. For their paper, Frolov, Krtouš, and Zelnikov explored what is known as a ring wormhole, which was first described in 2016 by theoretical physicist Gary Gibbons, of Cambridge University, and Mikhail Volkov of the University of Tours. Unlike the spherical contortions of spacetime we might attribute to black holes, the ring wormhole proposed by Gibbons and Volkov connects sections of the universe (or, indeed, different universes) which are generally described as “flat”, as ScienceAlert notes. Ring-shaped masses could potentially create some pretty remarkable distortions in what would otherwise be flat spacetime if you consider how their electrical and magnetic fields might interact. And so Frolov, Krtouš, and Zelnikov decided to consider two types of such wormholes: “a wormhole connecting to flat spaces; and a wormhole connecting two distant domains in the same space”. For the latter, they concluded that if a “massive thin shell” surrounded one of the mouths of the ring wormhole, a “closed timelike curve” would form. This, as the name suggests, would mean that any travelling object (or ray of light) would come back to the exact same point whence it began. In other words, you could travel in space and time and return to your point of departure. The most exciting aspect of ring wormholes, as the authors point out is that: “For the ring wormhole an observer passing through it moves in a flat (or practically flat spacetime), while in the case of ‘standard’ (spherical) wormholes he/she should pass a domain filled with the matter violating the null energy condition.” Even without knowing what the “null energy condition” is, you can appreciate that the first option sounds a lot simpler. Now, before you start calling yourself Marty McFly or making a list of all the past mistakes you’d like to correct, we should stress that we’re a long way off seeing the creation of a bonafide, buckle-your-seatbelt time machine. But at least, thanks to the efforts of experts like Frolov, Krtouš, and Zelnikov, we’re at least one step closer to going back in the future. 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.

(This story has been refiled to fix the dateline) By Foo Yun Chee and Chavi Mehta The U.S.

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Ahead of Global Accessibility Awareness Day on 18 May, Apple has unveiled a host of new iOS features that will be coming to the iPhone, iPad and Mac later this year. The suite of updates announced on Tuesday include accessibility features to help those with cognitive, vision, hearing and mobility disabilities and, for the first time, new tools for those who have lost their ability to speak or are at risk of losing their voice. In the future update, users with a speech disability or a recent ALS diagnosis will be able to use their Apple device to create a digital voice that sounds exactly like them. The feature, called Personal Voice, can be trained in 15 minutes simply by reading a bunch of randomly generated text prompts, and uses on-device machine learning to ensure your data is kept private and secure. The Motor Neurone Disease Association suggests that voice banking takes an average of two hours or longer with current tech, and can cost hundreds of pounds. The Independent got a first look at the new feature in action, and the Personal Voice sounded remarkably similar to the user’s actual voice, albeit with a slightly robotic, synthesised tone. Personal Voice will be available for use with Apple’s new Live Speech feature on iOS, which will let users type what they want to say and have it spoken out loud, during in-person conversations, as well as with phone and FaceTime calls. The feature is said to work with all accents and dialects. As well as features for speech accessibility, Apple announced a cognitive disability setting for the iPhone and iPad called Assistive Access, which essentially lets you pare your device down to a few core apps of your choosing. Arranged in a grid or a list, it simplifies the user interface down to large, easily readable buttons, so you can make calls, access an emoji-only keyboard, and a fuss-free camera, without the clutter. Companies such as Doro and Jitterbug currently have a stranglehold on the “simple phone”, offering devices for senior users that strip away the bulk, and deliver a simple user interface with large high-contrast buttons that make it easy to use a phone. With Apple’s new Assistive Access feature, those with cognitive disabilities will be able to take advantage of a mainstream iPhone device and its features without having to opt for an Android device or one designed for their specific need. In addition, Apple previewed a new feature in the Magnifier app for low vision users called Point and Speak, which makes use of the camera, the LiDAR Scanner and on-device machine learning to read aloud text that a user places their finger on. Plus, the company announced Mac support for Made for iPhone hearing devices, phonetic suggestions for Voice Control users and the ability for Switch Control users to turn their switches into game controllers on the iPhone and iPad. Apple has made it a tradition over the years to unveil new accessibility features ahead of WWDC in June, where it usually reveals the next iOS update, emphasising its prioritisation of accessibility within the iOS ecosystem. While Apple didn’t state when exactly the new updates would be coming to its devices later this year, a rollout alongside iOS 17 seems likely, given previous announcements. Read More Apple iPhone 15 rumours: All you need to know, from release date to price and specs iPhone 15 to add mysterious new button on the side, Apple rumours suggest Inside Apple’s Developer Academy, where future app developers are being taught to put disability first 75% of Irish data watchdog’s GDPR decisions since 2018 overruled – report AI pioneer warns UK is failing to protect against ‘existential threat’ of machines Apple highlights work of small developers amid ongoing questions about the App Store

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