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The moon exerts a previously unknown tidal force on the “plasma ocean” surrounding Earth’s upper atmosphere, creating fluctuations that are similar to the tides in the oceans, a new study suggests.

In the study, published Jan. 26 in the journal Nature Physics (opens in new tab) , scientists used more than 40 years of data collected by satellites to track the minute changes in the shape of the plasmasphere, the inner region of Earth’s magnetosphere, which shields our planet from solar storms and other types of high-energy particles. 

The plasmasphere is a roughly doughnut-shaped blob of cool plasma that sits on top of Earth’s magnetic field lines, just above the ionosphere, the electrically charged part of the upper atmosphere. The plasma, or ionized gas, in the plasmasphere is denser than the plasma in the outer regions of the magnetosphere, which causes it to sink to the bottom of the magnetosphere. The boundary between this dense sunken plasma and the rest of the magnetosphere is known as the plasmapause. 

“Given its cold, dense plasma properties, the plasmasphere can be regarded as a ‘plasma ocean,’ and the plasmapause represents the ‘surface’ of this ocean,” the researchers wrote in the paper. The moon’s gravitational pull can distort this “ocean,” causing its surface to rise and fall like the ocean tides.

Related: Colossal asteroid impact forever changed the balance of the moon

The moon is already known to exert tidal forces on Earth’s oceans, crust, near-ground geomagnetic field and the gas within the lower atmosphere. However, until now, nobody had tested to see if there was a tidal effect on the plasmasphere. 

To investigate this question, the researchers analyzed data from more than 50,000 crossings of the plasmasphere by satellites belonging to 10 scientific missions, including NASA’s Time History of Events and Macroscale Interactions during Substorms (THEMIS) mission. The satellites’ sensors are capable of detecting minute changes in the concentrations of plasma, which allowed the team to map out the exact boundary of the plasmapause in greater detail than ever before.   

The satellite crossings occurred between 1977 and 2015, and during this period, there were four complete solar cycles. This information allowed the team to factor in the role of solar activity on Earth’s magnetosphere. Once the sun’s influence was accounted for, it started to become clear that fluctuations in the shape of the plasmapause followed daily and monthly patterns that were very similar to the ocean’s tides, indicating that the moon was the most likely cause of the plasma tides. 

The researchers are unsure exactly how the moon causes the plasma tides, but their current best guess is that the moon’s gravity causes perturbations in Earth’s electromagnetic field. But further research is needed to tell for sure.

Related: How did the moon form? A supercomputer may have just found the answerRelated stories—Mars may be slowly ripping its largest moon apart

—Brand-new mini ‘moon’ found lurking in the outer solar system

—Ferris-wheel-size chunk of the moon is orbiting suspiciously close to Earth

The team thinks this previously unknown interaction between Earth and the moon could help researchers understand other parts of the magnetosphere in greater detail, such as the Van Allen radiation belts, which capture highly energetic particles from solar wind and trap them in the outer magnetosphere.

“We suspect that the observed plasma tide may subtly affect the distribution of energetic radiation belt particles, which are a well-known hazard to space-based infrastructure and human activities in space,” the researchers wrote. Better understanding the tides could therefore help to improve work in these areas, they added.

The researchers also want to see if plasma in the magnetospheres of other planets is influenced by those planets’ moons. “These findings may have implications for tidal interactions in other two-body celestial systems,” they wrote. 

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Politics

Sir Keir Starmer ‘absolutely’ wants Angela Rayner back in cabinet

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Sir Keir Starmer 'absolutely' wants Angela Rayner back in cabinet

Sir Keir Starmer has said he “absolutely” wants Angela Rayner back in his cabinet after she resigned for failing to pay the correct amount of stamp duty.

Speaking from the G20 Summit in South Africa, the prime minister told broadcasters his former deputy is “the best example ever” of social mobility and he is still in touch with her.

Asked if she could make a comeback this side of a general election, Sir Keir said: “I’ve always said I want Angela back. Even back in September at the time I said she is going to be a big voice in the Labour movement.

“Do I want Angela back at some stage? Yes absolutely.

“I think she is the best example ever in the United Kingdom of social mobility – going from a pretty challenging childhood to being deputy prime minister of the United Kingdom. She is the story of social mobility above all other stories.”

Asked if he missed having her around, Sir Keir said: “I’m friends with Angie and I like Angie a lot and we talk a lot. We still do.

“It’s always good to have Angela.”

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Ms Rayner’s meteoric rise to the top of Labour came after she left school aged 16, pregnant and with no qualifications.

She was elected deputy Labour leader by the membership in 2020, and was made deputy prime minister then housing secretary by Sir Keir.

She resigned from all of those positions in September, after it emerged she had not paid the higher rate of stamp duty on a second home she bought in Hove, East Sussex, saving her about £40k.

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Rayner admits she didn’t pay enough tax

It followed a tearful interview with Sky’s political editor Beth Rigby about the “complex living arrangement” regarding her first home, which was sold to a trust following her divorce to provide stability for her teenage son, who has lifelong disabilities and is the sole beneficiary of the trust.

An investigation by the prime minister ethic’s watchdog found she breached the ministerial code by failing to get correct tax advice, but that she acted “with integrity”.

Ms Rayner is still a backbench MP and recently did not rule out a return to the front bench herself – telling the Daily Mirror during a visit to a care centre in her constituency that she had “not gone away”.

Other cabinet ministers have also supported her return.

During the Labour Party Conference a few weeks after she resigned, Health Secretary Wes Streeting paid tribute to her work on the Employment Rights Bill and said Labour “wants her back and needs her back”.

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Technology

Americans are holding onto devices longer than ever and it’s costing economy

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Americans are holding onto devices longer than ever and it's costing economy

If you are holding onto your aging printer or cracked smartphone longer than you had planned, you are not alone.

Heather Mitchell, 69, retired and living in Tucson, Arizona, is content with her phone even though it is old by smartphone standards.

“My Samsung Galaxy A71 is six-years-old. It’s hanging in there surprisingly well for a jalopy. I’ve had issues with it, and still do, but they are minor,” said Mitchell. “I love Samsung phones, but can not afford a new one right now. A new phone would be a luxury.”

The average American now holds onto their smartphone for 29 months, according to a recent survey by Reviews.org, and that cycle is getting longer. The average was around 22 months in 2016.

While squeezing as much life out of your device as possible may save money in the short run, especially amid widespread fears about the strength of the consumer and job market, it might cost the economy in the long run, especially when device hoarding occurs at the level of corporations.

Research released by the Federal Reserve last month concludes that each additional year companies delay upgrading equipment results in a productivity decline of about one-third of a percent, with investment patterns accounting for approximately 55% of productivity gaps between advanced economies. The good news: businesses in the U.S. are generally quicker to reinvest in replacing aging equipment. The Federal Reserve report shows that if European productivity had matched U.S. investment patterns starting in 2000, the productivity gap between the U.S and European economic heavyweights would have been reduced by 29 percent for the U.K., 35 percent for France, and 101% for Germany.

Experts agree lost productivity and inefficiency are the unintended consequences of people and businesses clinging to aging technology.

“Think about how much internet speeds have changed in the past decade or more. In the 2010s, 100MB speeds were considered high speed and very good. A short 10 years later and we’re operating at 1GB speeds, which is roughly 10 times faster,” said Cassandra Cummings, CEO of New Jersey-based electronics design company Thomas Instrumentation. Operating at higher GB speeds requires different electronic hardware, and a lot of the older technology can’t handle it.

“Those devices were engineered when no one could fathom speeds that much faster would be mainstream,” Cummings said.

That can be a drain on nationwide networks as well.

“Both the cellular and internet infrastructure has to operate to be backwards compatible in order to support the older, slower devices. Networks often have to throttle back their speeds in order to accommodate the slowest device,” Cummings said. “Often entire sections of networks or company internal networks are running slower than they would if all devices were up to the newer standards,” she added.

Cummings doesn’t deny that staying up to date with new devices and hardware is expensive.

“Many companies, especially small businesses, and individual people can’t afford to constantly upgrade to the latest and greatest devices,” she said.

To ease the transition to new technologies, she says there should be designs that are repairable or modular rather than the constant purge and replace cycles. “So perhaps future devices can have a partial upgrade in say ethernet communications rather than forcing someone to purchase an entirely new computer or device,” Cummings said. “I’m not a fan of the throw-away culture we have these days. It may help the economy to spend more and force upgrades, but does it really help people who are already struggling to pay bills?” she said.

Indeed, entrepreneurs in the device resale market see the longer-lived tech as a success story that can be improved upon. Steven Athwal, CEO of the UK-based The Big Phone Store — which specializes in refurbished phones — says devices longevity is not the problem. “The issue is the lag. Businesses and individuals are trying to squeeze modern workloads out of old hardware, heavy processing, rendering, generation, and admin, and that creates a productivity drag. Things like slow processors, outdated software, and degraded batteries on older tech waste energy and morale,” Athwal said.

He adds that when people hold onto their phones or laptops for five or six years, the repair and refurbishment market becomes an active part of the economy. But right now, in both European, American, and global markets, too much of that happens in the shadows.

“It’s unregulated, underreported, and underutilized. If governments and big tech supported refurbishment properly, aging devices could become part of a sustainable circular economy,” Athwal said, improving the second-hand cycle by extending software support, improving access to parts, and treating repair as infrastructure.

“That’s how you disable constant replacement. No need to constantly push upgrades, which financially strains both small and large businesses alike,” Athwal said.

Still, some device manufacturers have found ways to entice consumers to ditch their older phones for newer ones. For instance, Apple just had one of its most successful new launches with the iPhone 17, and artificial intelligence could be a game-changer.

Najiba Benabess, dean of the business school at Neumann University, says rising prices and sustainability concerns are among reasons “America’s gadgets are aging out,” but the market should be focused on slowing productivity, increasing repair and maintenance expenses, and limited access to software updates and efficiency gains.

“Small businesses, in particular, lose valuable hours each year due to lagging systems, creating what economists call a ‘productivity drag,'” Benabess said. On a national scale, this translates to billions of dollars in lost output and reduced innovation. “While keeping devices longer may seem financially or environmentally responsible, the hidden cost is a quieter erosion of economic dynamism and competitiveness,” she added.

Most people still want the newest and most up-to-date phones and tablets, according to Jason Kornweiss, senior vice president of advisory services at Diversified, a global technology solutions provider, but research does show a widening gap between businesses and individuals when it comes to aging devices.

“Corporations with hundreds or thousands of people are not investing at the same rate,” Kornweiss said, adding that technology is changing so fast IT departments can’t keep up with the pace and that bloated corporations need to vet the newest technology, which takes time, and by the time they do the vetting, something new has arrived anyway. The result: businesses with increasingly long-in-the-tooth technology.

“Businesses establish shelf-life that is multi-year. Employees look at replacing devices within an organization as too tedious and people cringe when the IT department comes with a new device,” Kornweiss said, even when it is a meaningful upgrade, he added.

The price to the organization is then paid in lack of productivity, inability to multitask and innovate, and needless, additional hours of work that stack up. Workplace research conducted by Diversified last year found that 24% of employees work late or overtime due to aging technology issues, while 88% of employees report that inadequate workplace technology stifles innovation. Kornweiss says he doesn’t expect there’s been any improvement in those numbers over the past year.

There’s a disconnect between the numbers and behavior. Many workers report that aging devices stifle productivity, but like a favorite pair of shoes or an old sweater, they don’t want to give them up to learn the intricacies of a new device (which they’ll learn and then have to replace with another). Familiarity can trump productivity for many workers. But the result of that IT clinginess is felt in the bottom line.

“Productivity is hampered and it all has a tangible impact on the economics,” Kornweiss said.

The biggest commodity a worker has is time, he says, and older devices gobble that up. Bring-your-own-device (BYOD) policies can be a savior for businesses slow to upgrade, with individuals using their own more functional devices easily able to integrate into most workplace systems these days, Kornweiss said. Another option for companies that don’t want to buy a bunch of quickly dated devices is to lease.

Kornweiss sees a future where technology continues to advance at warp speed and companies will continue to have trouble keeping up. And individuals like Heather Mitchell will continue to hang on to their devices.

“I tend to hang onto my phone until I have no choice in the matter. In 26 years, this is only my fifth phone,” Mitchell said.

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More companies are shifting workers to passwordless authentication

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More companies are shifting workers to passwordless authentication

It’s safe to say that no one is crazy about passwords. For chief information security officers, there’s the nightmare of employees leaving lists of passwords on their desks or putting them on Post-it notes on their computers. For workers, there’s the inconvenience of having to enter multiple passwords to gain access to various devices and resources.

Passwordless authentication technology is designed to address these issues, and use of these tools is on the rise. A recent survey of 200 CISOs by Wakefield Research, sponsored by security vendor Portnox, showed that a significant majority (92%) of the security leaders said their organizations had implemented or were planning to implement passwordless authentication. That’s up from 70% in 2024. CISOs cited improved employee productivity and enhanced user experience as the top benefits.

Passwordless authentication verifies user identity without the need for traditional passwords, through alternative methods such as hardware tokens, biometrics, or mobile push notifications. It offers potential benefits such as enhanced security and improved user experience.

Training services provider Universal Technical Institute has begun using a passwordless platform from Microsoft, “and as we expand adoption, the benefits show up quickly, with fewer password resets, fewer service desk tickets, and a faster start to the day,” said Adrienne DeTray, senior vice president and CIO at the company.

“The bigger impact is cultural,” DeTray said. “It shows that we’re serious about making technology feel lighter and more human again. Over the years, we’ve added so many systems and logins that the weight of technology has become part of the work. This is one of those steps that helps remove that administrative drag and makes the ecosystem feel more seamless and connected.”

It’s not just about security, DeTray said, but user experience as well. “Every password reset or lockout slows people down and chips away at their focus,” she said. “Passwordless takes that friction out of the day and gives people time back. It’s part of designing a connected ecosystem where security and usability work hand in hand.”

MFA losing status as ‘gold standard’ cybersecurity

R Systems International, a provider of digital product engineering services, is in the midst of a phased migration to a passwordless environment, said CTO Srikara Rao. “For us, this isn’t about chasing a trend, it’s a direct response to the fact that our previous gold standard, multi-factor authentication, is showing its age,” Rao said. “The threat landscape has evolved past what traditional MFA can handle.”

R Systems’ decision to make the move is driven by both security and business enablement factors. “Credential-based attacks remain the top threat vector, with a significant rise in phishing attempts and several near-miss incidents underscoring the urgency to act,” Rao said. “We want to promote solutions within our organization that are phishing resistant.”

On the operational side, password resets have become quite expensive, Rao said. Resets can be costly due to direct labor expenses and significant indirect costs such as lost employee productivity and IT resource drain. Research firm Forrester estimates that a single password reset can cost $70, and this can add up quickly for large enterprises.

In addition, it’s critical that the company adhere to compliance requirements such as PCI 4.0, which mandates that users reauthenticate everything they restart or access. “Passwordless authentication will make it seamless,” Rao said. “And finally, as we compete for top tech and cybersecurity talent, being a passwordless enterprise signals that we’re a forward-thinking, security-first organization.”

Bring-your-own-device policies are a factor

Health-care services provider Diversus Health is also moving to passwordless authentication, using the technology in the form of certificate-based network access control.

“Due to recently adopting a bring-your-own-device policy, our internal annual HIPAA compliance audit detected lack of network access control as one of our high-risk threats,” said Neil Ford, IT security administrator. “So, we began looking into solutions that could be used to mitigate the threat.”

Diversus Health earlier this year deployed a system from Portnox that uses certificate-based authentication to verify the identity of devices. “We deploy the certificate through a cloud-based endpoint management solution, so verification with Portnox is transparent to staff,” Ford said.

The solution has effectively mitigated the threat of unknown devices connecting to the company’s network and being able to access internal resources, Ford said.

One of the keys to a successful adoption of passwordless authentication is to effectively communicate the security change with staffers. “Employees are overcoming decades of password muscle memory and addressing legitimate user anxiety about ‘what if I lose my device?’ is critical,” Rao said. “We learned quickly that we had to sell the ‘why’ to our employees.”

Enterprises need to frame passwordless authentication not as another security mandate, but as a direct benefit to employees through less frustration, faster logins, and the elimination of password resets, Rao said. Before making the shift, R Systems ran small, interactive training sessions to get people comfortable with access tools such as fingerprint identification on their phones.

“I cannot stress enough the importance of organizations providing user education,” Rao. “It’s a significant difference between a successful deployment and a shelfware investment.”

R Systems passwordless strategy isn’t tied to a single vendor, but built on FIDO2 and WebAuthn open standards, “giving us flexibility to choose the right tool for each risk profile,” Rao said. “Privileged users such as administrators, developers, and executives use FIDO2 hardware security keys, while the broader workforce relies on passkeys integrated with device biometrics like Windows Hello and Face ID.”

The company is still evaluating the results of the transition to passwordless authentication and working to ensure that it works best for everyone.

“We’ve seen our employee experience improve dramatically, with faster logins and a significant reduction in password-related help desk tickets,” Rao said. “Most importantly, passwordless authentication has become a cornerstone of our zero-trust architecture, giving us a stronger, high-assurance identity layer that enables secure access regardless of user or device location.”

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