Technologies

Our universe isn’t supposed to exist — but we’re slowly learning why it does

Scientists test the strange phenomena of antimatter, using a rather musical experiment.

You’re probably familiar with the following story: 13.8 billion years ago, the Big Bang led to stars and galaxies, which led to planets and life, and eventually, to you and me. But there’s a glaring gap in this chronicle, an aperture so big, solving it would shake our knowledge of reality.

«If we pluck, in principle, the best physics theories … we would need to conclude that the universe, as we observe it, cannot exist,» said Stefan Ulmer, a physicist at the RIKEN-led Baryon Antibaryon Symmetry Experiment at the European Council for Nuclear Research.

But… here we are playing Wordle and paying taxes, so either our laws of physics are wrong or we’re missing massive pieces of the metaphysical puzzle.

Among the army of scientists looking for those pieces, Ulmer has spent years studying the seed of our universe’s existential crisis: antimatter. In a paper published Wednesday in the journal Nature, he reports an update: Antimatter doesn’t react to gravity any differently than normal matter does.

Don’t worry if that last bit completely flew over your head, it’ll all come together.

First, what is antimatter?

Everything from the sun to the device you’re reading this article on is made up of the normal matter we know and love, composed of atoms built with positive protons and negative electrons. The Big Bang gave rise to all this matter, and the rest is literally history.

Here’s the weird part: Our universe also holds a tiny amount of antimatter, composed of atoms built with negative protons and positive electrons. It’s like the Big Bang’s rebel child.

These two also have a rift. When they come into contact, they totally annihilate one another because of their opposite charges. Even when scientists create antimatter for experiments, the zippy particles must remain in a vacuum because an antimatter particle in a normal matter environment would immediately go «poof.»

This incompatibility dominoes down to a huge existential problem – and it’s not just that we can’t meet our antimatter counterpart someday without basically exploding.

There should’ve been a particle war

Physicists use two main frameworks in explaining particle behavior: the Standard Model of particle physics and relativistic quantum field theory. Each is super solid in its own right, and combining them leads to a perplexing outcome.

Matter and its arch nemesis are two sides of the same coin.

«The architecture of space and time basically implies that matter and antimatter are, in principle, exactly symmetric,» Ulmer said, «which means they have the same masses, they have opposite charges, opposite magnetic moments and so on and so forth.»

If that’s true, the Big Bang should’ve had a 50/50 chance of forming either one. And had a 50/50 distribution happened, antimatter and matter should’ve completely destroyed one another. (Remember the rift?) With such a particle war, the universe wouldn’t have any matter. Space wouldn’t hold a sun or an Earth, and would surely lack humanity. Only a leftover sort of energy would’ve lingered after the battle.

But the sun, Earth and humans exist.

For some reason, the universe exhibits several orders of magnitude more matter than antimatter, a cosmic riddle known as baryon asymmetry, the namesake of Ulmer’s laboratory. Did Big Bang-generated antimatter vanish? Was there never any to begin with?

«We do not understand the origin of matter and antimatter asymmetry,» Ulmer simply puts it.

The part where it comes together

Because the Standard Model’s prediction of a 50/50 matter-type distribution relies on the particles being exactly symmetrical, the mystery may finally be solved if we find a way to breach the presumed parallel.

«If, let’s say, the proton would be a bit heavier than the antiproton, that would immediately explain why there is more matter than antimatter,» Ulmer said. That’d pretty much elucidate why the universe exists.

Let’s return to Ulmer’s study results: Both matter and antimatter respond to gravity the same way, ruling out some options on the ledger of possible symmetry violations.

Ta-da, told you it’d come together.

A proton symphony

Ulmer’s experiment began with a fascinating device called a Penning trap, a small metal contraption that detects a particle’s cyclotron frequency, or frequency at which something moves in a magnetic field.

The researchers placed a lab-produced antiproton inside and measured its cyclotron frequency, then popped in a negatively charged hydrogen ion and measured the same parameter. (Ulmer used a negatively charged hydrogen ion, or atom with one proton and two electrons, as a normal matter representative because it matched the antiproton’s negative charge).

It’s easiest to think of the experiment in terms of music.

The Penning trap’s pickup system, Ulmer says, is akin to what’s in an electric guitar. «It’s, in that sense, a very musical experiment,» he explained, being a guitar player himself.

«The frequency range is a bit different, but we are listening to the sound of what does not exist in the universe,» he added. «With our current ability to listen, [matter and antimatter] sound identical.»

The particles play the same melody, if you will, which also means they have the same music notes. Aka, these particles’ cyclotron frequencies were the same, as were many of their resulting properties, such as charge-to-mass ratio. All of these similarities are now eliminated from the list of possible matter-antimatter symmetry violations.

Space as a laboratory

But the researchers’ ultimate goal was to use their cyclotron frequency data and see whether the antimatter song changes alongside adjustments in a gravitational field. Specifically, they tested whether Einstein’s weak equivalence principle – true for normal matter – works on antimatter.

Einstein’s principle states that any object in a gravitational field behaves independently of its intrinsic properties. For instance, a piano and a feather would fall to Earth with the same acceleration in the absence of external forces such as wind.

Intuitively, we might assume antimatter’s opposite charges would force it to «fall up,» or at least have some variation in behavior.

For this facet of the experiment, Ulmer took advantage of some cosmic lab equipment: the Earth and sun. «As the Earth is orbiting around the sun in an elliptical orbit,» Ulmer said, «the gravitational potential in our laboratory changes as a function of time.»

So, he and his research team measured the cyclotron frequencies, aka the melodies, of both the antiproton and negative hydrogen ions at different points in time. After 24,000 comparisons, they concluded both particle types reacted the same – with very, very high certainty.

Voila, Einstein’s principle works on antimatter. It does not, in fact, fall upward.

«We’ll continue making the microscope better and better to be sure,» Ulmer said, and «if we find something unexpected in these experiments, this would change our fundamental understanding of the laws of nature.»

Philosophical consequences of antimatter

For argument’s sake, let’s suppose someone finally finds a discrepancy between antimatter and matter. What might that mean for us?

Violating matter-antimatter symmetry would mean violating a larger phenomena called CPT invariance. C stands for charge, P for parity and T for time. In a nutshell, the rule states if any of these things were reversed, the universe would fundamentally remain the same. If time went backward instead of forward, if everything was left handed instead of right handed and, you guessed it, if all matter had the opposite charge, the world wouldn’t change.

If we were to find antimatter isn’t the same as normal matter, C would be violated. And if CPT invariance is violated, then causality, scientists say, may no longer hold. «I think this would maybe lead to a more philosophical change in our thinking,» Ulmer said. «Comparable to what happened in the 1920s when quantum mechanics was developed.»

Adding, «up to that point, people were thinking that everything is deterministic. In quantum theory, things cannot be deterministic by definition anymore – so this changes how people are understanding themselves.»

Even more baffling is the realization that because the universe appears to exist, we sort of already know antimatter is up to something. In a sense, we already know we’ll have to adjust our perspective of reality.

We’re just waiting for the right moment.

Technologies

Will Tim Cook Step Down? Apple CEO’s Impending 65th Birthday Sparks Succession Talk

Apple is likely in the process of choosing someone to fill the chief executive role once Tim Cook decides to retire. Here are a few potential candidates that reports say are being considered.

Tim Cook‘s 65th birthday is next week, on Nov. 1. And with the Apple CEO’s special day almost here, talks have been growing as to who could be his successor should he choose to retire. Cook has made no official public mention of stepping down yet, but according to Bloomberg’s Mark Gurman, the tech giant is working behind the scenes to ensure a seamless transition when the time comes.

Cook replaced Steve Jobs in 2011, and after a period of uncertainty, Cook ushered Apple into its most profitable era. Stock-watching website Stocktwits reports that the company’s stock has increased by around 1,800% since Cook took over leading the company.

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Jobs may have introduced devices like the iPhone into everyday use that changed how we interact with technology, but Cook expanded on the Apple experience. Under his guidance, the company built upon Apple’s smartphone by introducing subscription services and more mobile products, including earbuds and wearables.

He introduced Apple Pay, Beats headphones became part of the company’s ecosystem, the Apple Watch launched 10 years ago, and Apple even entered the entertainment business, producing original Oscar-winning movies and Emmy-winning TV shows through Apple TV Plus.

Read more: Best iPhone in 2025: Here’s Which Apple Phone You Should Buy

We should reiterate that the notion of Cook stepping down is pure speculation at this point. We don’t know what Apple’s CEO is currently planning or what his thoughts about retirement may be. That said, there are a handful of contenders who have reportedly been part of the succession conversation.

Potential Apple CEO contenders

Apple likely has «a solid bench of successors» that the company’s board has been developing, says Bryan Ma, VP of Devices Research at IDC.

«But the anxiety gets amplified when there isn’t clear visibility for such a valuable and iconic company,» Ma says. «Compounding the challenge is the fact that the bar has been set by big rock stars like Steve Jobs and Tim Cook. The next generation of leaders have very big shoes to fill.»

John Ternus, Apple’s current vice president of Hardware Engineering, was top of Gurman’s list. Ternus has been with the tech giant for more than two decades, so he has the knowledge and experience for a chief executive upgrade. There would be value in having an engineer behind the wheel.

Ternus appeared during the September Apple event to introduce the iPhone Air. At 50, he’s the same age Cook was when he took over as Apple CEO.

Other potential contenders are also being considered, including Craig Federighi, Apple’s senior vice president of software engineering; Greg Joswiak, Apple’s senior vice president of worldwide marketing; and Jeff Williams, the company’s former chief operating officer, according to a report by Apple Insider. On Oct. 10, Bloomberg reported that Federighi also will soon be overseeing the Apple Watch operating system watchOS, while Ternus will be overseeing Apple Watch hardware engineering once Williams departs at the end of the year.

Federighi has been with Apple for a long time and has the public speaking experience — frequently speaking during Apple Events — that would be vital if he replaced Cook as CEO. Considering his current role, Joswiak has a more marketing perspective and a broader overview of the company and may not be as hands-on with the tech as Ternus and Federighi. And according to Gurman, Williams was viewed as a shoo-in to be Cook’s replacement until his role as COO was announced to be ending. (He’s now Apple’s senior vice president of design, watch and health.) Cook held the position of chief operating officer before he replaced Jobs as CEO in 2011. Sabih Khan will be stepping into that COO role, which also puts his name in the running.

When Cook steps down, Apple will undoubtedly have a pool of qualified talent to choose from to take up the leadership mantle. Who exactly will take the mantle remains to be seen.

Apple didn’t immediately respond to a request for comment.

Technologies

Meta Will Close Down Its Messenger Apps on Mac and Windows

You’ve got two more months until the apps are gone.

Meta is discontinuing its desktop Messenger apps for Windows and Mac. Starting Dec. 15, you’ll need to head to Facebook to continue chatting through the app on your computer.

Once the sundowning process begins, you’ll receive an in-app notification. You’ll have a 60-day window to continue using Messenger before the app is permanently shut down. (But don’t worry — the mobile app for Messenger will remain.)

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If you want to save your chat history, Meta suggests activating secure storage before the app is gone forever. Otherwise, your chat history will be gone forever, as well.

The Messenger desktop app is no longer available on the Apple App Store. After Dec. 15, Meta users who try to access Messenger on desktop will be redirected to Facebook.com. Users without a Facebook account will be redirected to Messenger.com.

Technologies

Your iPhone Is Quietly Extending Its Battery Life Thanks to This iOS 26 AI Feature

Adaptive Power in iOS 26 can help eke out more battery life before it’s time for a recharge.

The battery in the iPhone 17 Pro Max is physically larger, leading CNET managing editor Patrick Holland to say in his review that it delivers «the best battery life of any phone that CNET has ever tested.» But more power cells aren’t the only contributing factor, and longer battery life isn’t just for the newest iPhone models.

A new software feature in iOS 26 called Adaptive Power also contributes to improved battery life. It’s enabled by default on Apple’s latest phones, but also available on older models that support Apple Intelligence.

Currently, the iPhone uses as much power as it needs to perform its tasks. You can extend battery life by doing a number of things, such as decreasing screen brightness and turning off the always-on display. Or, if your battery is running low, you can turn on Low Power Mode, which limits background activity, like fetching mail and downloading data, and dims the screen to help extend battery life. Low Power Mode also kicks in automatically when the battery level reaches 20%.

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If Low Power Mode is the hammer that knocks down power consumption, Adaptive Power is the scalpel that intelligently trims energy savings here and there as needed. Based on Apple’s description that accompanies the control, the savings will be felt mostly in power-hungry situations such as recording videos, editing photos or even playing games.

Apple says Adaptive Power takes about a week to analyze your usage behavior before it begins actively working. And it works in the background without needing any management on your part.

Here’s how Apple describes it in the iPhone user guide: «It uses on-device intelligence to predict when you’ll need extra battery power based on your recent usage patterns, then makes performance adjustments to help your battery last longer.»

Which iPhone models can use Adaptive Power?

The feature uses AI to monitor and choose when its power-saving measures should be activated, so that means only phones compatible with Apple Intelligence get the feature. These are the models that have the option:

• iPhone 17
• iPhone 17 Pro and iPhone 17 Pro Max
• iPhone Air
• iPhone 16 and iPhone 16 Plus
• iPhone 16 Pro and iPhone 16 Pro Max
• iPhone 16e
• iPhone 15 Pro and iPhone 15 Pro Max

Although some iPad and Mac models support Apple Intelligence, the feature is only available on iPhones.

How to turn Adaptive Power on

Adaptive Power is on by default on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max and iPhone Air. For other models, you must opt in to use it. In iOS 26, you’ll find the Adaptive Power toggle in Settings > Battery > Power Mode. To be alerted when the feature is active, turn on the Adaptive Power Notifications option.

Adaptive Power sounds like an outgrowth of Gaming Mode, introduced in iOS 18, which routes all available processing and graphics power to the frontmost app and pauses other processes in order to deliver the best experience possible — at the notable expense of battery life.

What does this mean for your charging habits?

Although we all want as much battery life as possible all the time, judging by the description, it sounds as if Adaptive Power’s optimizations will not always be active, even if you leave the feature on. «When your battery usage is higher than usual» could include a limited number of situations. Still, considering that according to a CNET survey, 61% of people upgrade their phones because of battery life, a feature such as Adaptive Power could extend the longevity of their phones just by updating to iOS 26.

I also wonder whether slightly adjusting display brightness could be disruptive, but in my experience so far, it hasn’t been noticeable. Because the feature also selectively de-prioritizes processing tasks, the outward effects seem minimal. When it’s activated on my iPhone 16 Pro, the only indication was the Adaptive Power alert that appeared.

We’ll get a better idea about how well Adaptive Power works as more people adopt iOS 26 and start buying new iPhone models. Also, remember that shortly after installing a major software update, it’s common to experience worse battery life as the system optimizes data in the background; Apple went so far as to remind customers that it’s a temporary side effect.