A businessman with ties to Chinese military contractors was among the overseas investors who acquired stakes in SpaceX while it was still a private company. An entity linked to the Qatari royal family also took a stake.
The new details come from a private investor list obtained by ProPublica that sheds light on a particularly delicate issue for Elon Musk’s rocket company: which people in countries like China bought into the company, and how. SpaceX built its business off sensitive US government work like making spy satellites for the Pentagon. While there is no ban on Chinese investment in US military contractors, such investment is heavily regulated.
In a sign of its sensitivity to the concerns, SpaceX barred investors from China and Hong Kong from buying shares in its initial public offering last week due to “regulatory and compliance risks,” Bloomberg reported. The US government alleges that China has a strategy of using investments in sensitive industries for espionage and to get access to cutting-edge technology.
A businessman with ties to Chinese military contractors was among the overseas investors who acquired stakes in SpaceX while it was still a private company. An entity linked to the Qatari royal family also took a stake.
The new details come from a private investor list obtained by ProPublica that sheds light on a particularly delicate issue for Elon Musk’s rocket company: which people in countries like China bought into the company, and how. SpaceX built its business off sensitive US government work like making spy satellites for the Pentagon. While there is no ban on Chinese investment in US military contractors, such investment is heavily regulated.
In a sign of its sensitivity to the concerns, SpaceX barred investors from China and Hong Kong from buying shares in its initial public offering last week due to “regulatory and compliance risks,” Bloomberg reported. The US government alleges that China has a strategy of using investments in sensitive industries for espionage and to get access to cutting-edge technology.
Le 12 août prochain, une éclipse solaire offrira un spectacle rare aux observateurs du monde entier. Visible depuis la France métropolitaine, elle promet des conditions d’observation particulièrement impressionnantes dans certaines régions. Mais attention : admirer le Soleil, même partiellement...
Around 66 million years ago, an asteroid wiped out 75% of the species on Earth. This event caused the extinction of all dinosaurs except birds, referred to as non-avian dinosaurs. However, an open question in paleontology is whether the dinosaurs were already declining before the asteroid hit. Many scientists think that around 5 to 10 million years before the extinction event, dinosaurs became less biologically diverse across America, making them more prone to extinction.
To investigate this hypothesis, scientists recently revisited fossils in a rock layer from the end of the dinosaur era that previous researchers had incorrectly dated. The bulk of the fossils from this period had previously been collected from a different section of rocks called the Hell Creek Formation in Montana. These researchers studied a rock layer in New Mexico that is exposed to the surface, known as the Naashoibito Member. It’s approximately 30 meters (about 100 feet) thick and formed from ancient river sediments.
To determine when the Naashoibito Member formed, the scientists measured the decay of radioactive elements within its mineral grains over time, a technique called radiometric dating. The scientist reasoned that these mineral grains must have crystallized before being transported and incorporated into the Naashoibito Member, so their youngest ages should provide a maximum depositional age.
They determined the ages of 1,046 crystals of the mineral feldspar from 2 dinosaur-bearing rock layers in the Naashoibito Member. Based on these ages, the researchers found that a sandstone within 5 meters (about 16 feet) of the lowest boundary of the Naashoibito Member must be younger than 66.9 million years old. They found that the other layer, which is around 3.5 meters (11 feet) from the base of the lowest boundary, must be younger than 66.4 million years old. These age ranges indicated that the sandstone contains dinosaur fossils formed 400,000 years before their extinction.
Next, the researchers measured the direction of magnetic minerals inside the rocks, using a practice called magnetostratigraphy. The direction of these minerals indicates where Earth’s magnetic field was pointing at that time. Scientists have shown that the Earth’s magnetic field has flipped multiple times over Earth’s history, so they can use these magnetic signals to create a timescale for when the sediments formed.
The researchers wanted to determine whether the magnetic minerals were lined up in a direction like today, called normal polarity, or the opposite, called reverse polarity. The researchers found one rock layer with normal polarity at the base of the Naashoibito Member, and one with reverse polarity in the upper part of the Naashoibito Member. These magnetic field directions lined up with 2 known polarity intervals over a timeline that matched the feldspar dates. Together, these data demonstrated that the Naashoibito Member formed at the end of the dinosaur era, around the same time as the Hell Creek Formation.
Next, the researchers wanted to test whether non-avian dinosaurs maintained their diversity across different regions of Western North America during this time period. They compared fossil patterns from locations across North America using statistical grouping methods that determine how similar or different their environments were. They found that temperature, rather than geographical location alone, was the best predictor of diversity at the extinction event.
The team concluded that a diverse population of Naashoibito dinosaurs lived at around the same time as the Hell Creek dinosaurs. Earlier scientists surmised that dinosaurs were already on the decline because they studied the colder northern regions, where diversity was lower. However, these results suggest that warmer conditions in the south still supported diverse dinosaur populations. Together, this evidence suggests that dinosaurs were still diverse and thriving 66 million years ago, and that their extinction was indeed a result of the asteroid impact.
The word Rolex has five letters, two syllables, and works in every language a marketer might want to sell into. It is short enough to sit on a watch dial without crowding the hands, blunt enough to pronounce in German, French, Japanese, and Hindi without distortion, and abstract enough to mean nothing at all. A young Bavarian named Hans Wilsdorf registered it as a trademark in 1908 in La Chaux-de-Fonds, Switzerland, years before he had a factory of his own. The name came first. The watches followed.
That sequence — invent the word, secure the word, then build the company around it — is one of the earliest known examples of what marketers would later call a coined brand. Wilsdorf did it in 1908 for a product he did not yet manufacture.
Wilsdorf had ended up in London after a stint at a watch exporter in La Chaux-de-Fonds. By his mid-twenties he was importing Swiss movements and casing them in England under the unglamorous name Wilsdorf & Davis. He wanted something better. He wanted a name that was short, memorable, pronounceable in any European tongue, and small enough to be legible above the 12 o’clock marker of a wristwatch barely 30 millimetres across.
The constraints were real.
Try the test yourself. Write your favourite watch brand on a dial 30 millimetres wide, leaving room for hour markers, a logo, and the hands. Patek Philippe is thirteen letters and a space. Vacheron Constantin is eighteen. Jaeger-LeCoultre is fifteen and a hyphen. Rolex is five. On a wrist seen from across a room, five wins.
The phonetics of a global product
The cleverness sits in what the word avoids. There is no diphthong that collapses in Mandarin. No silent letter that an English speaker would mispronounce in French. No umlaut. No accent. No consonant cluster that trips an Italian tongue. The two syllables — ro and lex — are phonemes that exist in nearly every major language. A Tokyo retailer and a Geneva concierge say the word almost identically.
This was not accidental. By his own account, Wilsdorf wanted a name that was short, easy to say and remember in any language, and that looked good on a dial — a goal he later described as the reason he ran through hundreds of letter combinations before settling on Rolex, as Rolex itself recounts in its company history. He had also learned, selling watches across the British Empire and into continental Europe, that brand names with national flavour travelled badly.
He got one. Rolex is the closest thing the watch industry has ever produced to a piece of linguistic infrastructure — a sequence of sounds engineered to survive translation.
Trademark first, factory later
Wilsdorf registered the name in Switzerland in 1908 — the surviving registry entry is dated 2 July 1908 and lists the La Chaux-de-Fonds office of Wilsdorf & Davis, as the original trademark record reproduced in horological archives shows. He was still operating out of London and still casing movements supplied by Hermann Aegler’s workshop in Bienne. He did not own a Swiss manufacturing operation. He owned a word, an import-export business, and a hunch that wristwatches — at that point still dismissed as women’s jewellery, a prejudice Space Daily has explored in detail — would become the dominant form of timekeeping for men within a generation.
He was right on both counts. The First World War, with its trench officers needing both hands free, did for the wristwatch what no advertising campaign could. By 1919 Wilsdorf had relocated to Geneva, partly because British post-war duties made exporting from London punishing, and partly because anti-German sentiment in Britain had already pushed him to rename the firm The Rolex Watch Co. Ltd. in 1915, a change Britannica attributes to wartime prejudice against the German-sounding Wilsdorf name. The company that became synonymous with Swissness was Swiss almost by accident of geopolitics.
What a name buys you
Coining a word does something specific that descriptive names cannot. A descriptive name — Universal Geneve, International Watch Company — tells you what the thing is and where it comes from, and that’s the ceiling of its meaning. A coined word is an empty vessel. Whatever you pour into it over decades of advertising, sponsorship, and product, the word holds.
Wilsdorf began pouring almost immediately. The company developed the Oyster case, among the first commercially viable waterproof wristwatches. In 1927 a young London typist named Mercedes Gleitze, the first British woman to swim the English Channel, wore an Oyster during a high-profile Channel swim, and Wilsdorf took out prominent newspaper advertising to promote it. The word Rolex had its first myth.
The dress watch market is still organised around names of this kind. A 2025 Esquire review of a dress watch describes the category in language Wilsdorf would have recognised: thinness, legibility, restraint. The dials of the watches sitting next to it in auction catalogues all carry short, abstract words. Omega. Cartier. Tudor. Seiko. The naming convention Wilsdorf arrived at in 1908 became the default the rest of the industry now follows.
The decision that made Rolex unbuyable
Naming was the first of two structural decisions that made Rolex what it is. The second came after the death of Wilsdorf’s wife, Florence. Childless and grieving, he created the Hans Wilsdorf Foundation and, in his will, left every share of Rolex to it. When he died in 1960, the foundation became the sole owner. That arrangement — which Space Daily has covered separately — means no shareholder can demand a dividend, no rival can buy the company, and no quarterly report has to be filed. Rolex’s finances remain opaque because there is no legal obligation to publish them.
The opacity is the point. Because the company discloses nothing, every revenue figure is an outside estimate: analysts at Morgan Stanley and LuxeConsult put Rolex’s annual wholesale revenue above CHF 11 billion in their most recent reading, while cautioning that the brand publishes no official figures of its own. The foundation, a registered Swiss charitable trust, directs funds to charitable causes, including children’s charities — a nod to Wilsdorf’s own childhood as an orphan.
In 2023, Rolex agreed to buy Bucherer, its largest retailer, consolidating a distribution partner it had worked with for a century. A privately held watchmaker had moved to absorb its own biggest distributor, the kind of step no public company answerable to shareholders would have executed so quietly.
The freedom to make moves like that traces back to two decisions taken decades apart by the same man. First, in 1908, to coin a word with no national origin and trademark it before he had a factory. Second, decades later, to put the company beyond ownership. The first decision gave Rolex a name that could be sold anywhere. The second made sure no one could ever sell Rolex.
What five letters still do on a dial
Pick up a Submariner. The word sits above the centre pinion in a sans-serif crown-logo lockup that has barely changed in eighty years. Five letters. About four millimetres wide on a 40 mm dial. The eye reads it before it registers the hour. On a black bezel diving watch under a cocktail-bar lamp, the word is legible at three metres. On a gold Day-Date across a boardroom table, it’s legible at five.
That legibility is a function of letter count. Six letters would have required a smaller font. Eight would have required either a smaller font or a curved arc that distorts the reading angle. Five fits the optical sweet spot of a wristwatch dial almost perfectly — the horological equivalent of a logo built for a smartphone home screen, except Wilsdorf made the choice in 1908, when the dominant timepiece was still a pocket watch on a chain.
There is a reason the watch industry has not produced another Rolex-style word in the 118 years since. Most of the obvious five-letter, language-neutral combinations were registered long ago. The rest sound like pharmaceuticals. Coining a word that means nothing and survives a century of meaning being poured into it is harder than it looks, and the field is crowded with failures whose names you have already forgotten.
The trademark filing in La Chaux-de-Fonds in 1908 predated the existence of Rolex SA as an independent Swiss manufacturer by years. It predated the Oyster case by nearly two decades. It predated the foundation that owns the company today by several decades. It predated the watch on the wrist of an English Channel swimmer by nearly twenty years. For most of its first decade, the word Rolex sat on watches whose movements were made by other people, in cases assembled by other people, sold under a name that belonged to a young Bavarian importer in a rented London office. The word did the work. The factory caught up later.
Look at a Rolex dial today and you are reading a piece of linguistic engineering that is older than the Russian Revolution, older than the Model T, older than the first transatlantic flight. The hands have moved roughly a billion times around it. The word has not.
The Guardrails Alliance, which has raised $5 million, is positioning itself as a populist effort that will take on the pro-A.I. interests trying to influence this year’s elections.
Generator’s shares rise as regulator finds no evidence of misleading statements about fuel’s sustainability
The City watchdog has closed an investigation into the owner of the Drax power plant after an almost 10-month review into whether the company’s sustainability claims mislead shareholders.
The Financial Conduct Authority said it had “reviewed thousands of pages” of “complex material” relating to the company’s sourcing of wood pellets for the Drax power plant in Selby, North Yorkshire, but “did not find evidence that justified any further action”.
En mars 2026, le cyclone Jolina ravageait l'Afrique du Nord. Quelques années plus tôt, la tempête Daniel tuait des milliers de personnes à Derna, en Libye. Ces catastrophes ont un nom peu connu du grand public : les médicanes. Le réchauffement climatique leur donne de l'ampleur.
À Rocamadour, sur le causse de Gramat, des magots vivent en liberté au cœur d’une forêt préservée. Sans cages ni vitres, les visiteurs évoluent à pas feutrés parmi ces macaques de Barbarie, observant de près une espèce menacée. Une expérience rare, qui invite à porter un autre regard sur la...
Harlan Coben's I Will Find You is now streaming on Netflix — here's everything you need to know about Matthew's disappearance and David's false imprisonment.
We're about six weeks out from the debut of Spider-Man: Brand New Day, the follow-up to 2021’s No Way Home. It's been five years since Spidey graced the big screen, so naturally, Sony Pictures has released a new trailer to build audience anticipation.
(Spoilers for No Way Home below.)
No Way Homeended on a pretty bleak note, with Peter Parker (Tom Holland) asking Doctor Strange (Benedict Cumberbatch) to erase him from everyone’s memory to protect the multiverse, including MJ (Zendaya).
One of the United States' most storied space launch sites has been cleared of its decades-old support towers, making way for modern rockets to use the pad. Space Launch Complex-6 (SLC-6) at Vandenberg Space Force Station is arguably better known for what did not lift off from there than for what did.
A series of demolition charges on Tuesday (June 16) brought down the access tower, mobile service tower, and what remained of the assembly building at SLC-6—pronounced "slick-six"—in Southern California. Once the location for the US Air Force's first effort to put humans into space and later, the West Coast launch site for the space shuttle, SLC-6 will next be used by SpaceX in support of Falcon 9 and Falcon Heavy missions.
Vandenberg Space Force Base personnel watch as the assembly building at Space Launch Complex-6 (SLC-6) is toppled on June 16, 2026, to make way for SpaceX's use of the site.
Credit:
Space Launch Delta 30/Tech. Sgt. Draeke Layman
"Space Launch Complex-6 represents six decades of American innovation and our unwavering commitment to securing space superiority," Col. James T. Horne III, commander of Space Launch Delta 30 at Vandenberg, said in a statement. "By modernizing this historic footprint in partnership with our defense industrial base, we are building directly upon the foundation of our pioneers."
One of the United States' most storied space launch sites has been cleared of its decades-old support towers, making way for modern rockets to use the pad. Space Launch Complex-6 (SLC-6) at Vandenberg Space Force Station is arguably better known for what did not lift off from there than for what did.
A series of demolition charges on Tuesday (June 16) brought down the access tower, mobile service tower, and what remained of the assembly building at SLC-6—pronounced "slick-six"—in Southern California. Once the location for the US Air Force's first effort to put humans into space and later, the West Coast launch site for the space shuttle, SLC-6 will next be used by SpaceX in support of Falcon 9 and Falcon Heavy missions.
Vandenberg Space Force Base personnel watch as the assembly building at Space Launch Complex-6 (SLC-6) is toppled on June 16, 2026, to make way for SpaceX's use of the site.
Credit:
Space Launch Delta 30/Tech. Sgt. Draeke Layman
"Space Launch Complex-6 represents six decades of American innovation and our unwavering commitment to securing space superiority," Col. James T. Horne III, commander of Space Launch Delta 30 at Vandenberg, said in a statement. "By modernizing this historic footprint in partnership with our defense industrial base, we are building directly upon the foundation of our pioneers."
The US Department of Justice has asked a federal court to throw out a Clean Air Act lawsuit against Elon Musk’s xAI, arguing that the company’s unpermitted gas turbines near Memphis are a matter of “national, economic, and energy security.”
The move puts the Trump administration in court alongside Musk to defend dozens of methane-burning turbines that have been running without air permits in one of the most polluted regions of the country.
The Iranian regime has issued threats against Elon Musk’s business interests in the Middle East, stating its intention to target his space-related projects. At the same time, some analysts suggest that the founder of SpaceX could respond to the situation by cooperating with Ukrainian defense technology developers in efforts to counter Iranian drones. Against the […]
Deep within our planet lies a critical interface known as the core–mantle boundary (CMB), a region where extreme temperatures and dynamic processes converge to shape Earth’s thermal and magnetic evolution. Recent research has illuminated the intricate behaviors of heat flow at this boundary, revealing how variations here influence the geodynamo—the mechanism responsible for Earth’s magnetic field. A groundbreaking study now explores how distinctive structures in the lowermost mantle can actually reverse the expected direction of heat transfer, fundamentally altering our understanding of how the deep Earth operates.
The core’s heat output and the mantle’s behavior are intimately linked, but spatial and temporal variations in heat flux at the CMB complicate this relationship. Heat flow from the core into the mantle typically fuels convective currents in the liquid outer core, driving the geodynamo process that sustains Earth’s magnetic shield. However, recent sophisticated simulations suggest that beneath certain geological features in the mantle, heat might instead flow back toward the core, a phenomenon previously unconfirmed and challenging conventional geophysical assumptions.
Central to this discovery are large low-shear-wave-velocity provinces (LLSVPs), massive structures located at the base of the mantle. These provinces are identifiable by their diminished seismic wave speeds, which geophysicists interpret as reservoirs of anomalously hot, chemically distinct materials. The new study models these LLSVPs with enhanced thermal conductivity adjustments and accounts for excess internal heating, simulating how these features interact dynamically with heat flow near the CMB.
The simulations reveal a striking phenomenon: heat flux directly beneath LLSVPs can be locally negative. This means, counterintuitively, that heat is being transferred from the mantle back into the core. This unexpected reversal challenges prior models which generally assumed a consistent outward flow of heat from core to mantle. Such negative fluxes have profound implications not only for the thermal balance of the Earth’s interior but also for the longevity and variability of its magnetic field.
Moreover, the research underscores that throughout the base of the mantle piles associated with LLSVPs, the heat flux remains lower than the adiabatic heat flux of the core. This thermal configuration suggests a degree of regional stratification at the top of the core, potentially explaining discrepancies observed in seismic and geomagnetic data. In other words, the topmost layer of the core may be thermally segregated in ways that we had not confirmed previously.
Interestingly, the study also explores the impact of subducted slabs—denser fragments of oceanic lithosphere—that eventually reach the CMB. The arrival of these slabs triggers pronounced spikes in heat flux, dramatically increasing the heterogeneity of lateral heat flow along the core–mantle boundary. This dynamic enhances the complexity of heat exchange patterns and further influences the geodynamo’s behavior, potentially affecting geomagnetic activity on geological timescales.
A significant implication of these findings relates to so-called “superchrons,” intervals lasting tens of millions of years during which Earth’s magnetic field remains stable without reversals. The occurrence of locally negative heat flux beneath the LLSVPs might explain these long periods of geomagnetic quiescence. When heat flows reversely into the core, it can alter convection patterns in ways that suppress the typical polarity flip mechanism, shedding new light on the origin and cessation of superchrons.
The study’s approach involved advanced mantle thermochemical convection modeling that incorporates temperature-dependent thermal conductivity and internal radiogenic heating within dense mantle piles. This methodological innovation provides a more realistic representation of the mantle’s behavior at extreme conditions than previous models, enabling researchers to capture subtle but critical feedbacks influencing heat fluxes at depth.
By reconciling seismic data, which reveals complex structures in the lowermost mantle, with geomagnetic observations that hint at temporal variability in the geodynamo, this research bridges a vital gap in Earth sciences. The correspondence between the spatial extents of LLSVPs and anomalies in the geomagnetic field suggests a coupling mechanism mediated through heat flux variations being directly tied to mantle dynamics.
The nuanced understanding of heat flow gleaned from this work also carries implications for the planet’s thermal evolution over geologic time. How heat migrates across the CMB influences the cooling rate of the core, the crystallization of the solid inner core, and consequently the lifecycle of the geodynamo. The discovery that heat transfer is not unidirectional, but can locally reverse in space and time, necessitates revisiting models of Earth’s deep thermal history and magnetic field generation.
This revelation also lays groundwork for interpreting seismic tomography results with a new lens, appreciating that chemical and thermal heterogeneity in LLSVPs exerts a tangible impact on core processes. The presence of chemically distinct reservoirs affects not only the mantle’s physical properties but also its thermal gradient with direct knock-on effects for core convection patterns and magnetic field intensity.
Such interconnectedness across Earth’s deep interior underscores the planetary-scale complexity of thermal and compositional interactions driving Earth’s long-term stability. The core-mantle boundary emerges not simply as a static physical barrier but as a dynamic interface where thermal regimes, chemical signatures, and fluid motion all coalesce to modulate our planet’s magnetic heartbeat.
Future research building on these findings may sharpen our forecasts for geomagnetic field behavior, including its reversals and excursions, by incorporating the interplay of mantle structures and heat flux heterogeneity shown in this study. Understanding these processes is not merely academic; Earth’s magnetic field shields life on the surface from charged solar particles, making geomagnetic stability crucial for habitability.
In conclusion, the discovery of negative heat flux beneath LLSVPs represents a paradigm shift in understanding Earth’s deep thermal dynamics. It opens fresh avenues into interpreting Earth’s magnetic field history and its deep interior’s energy budget, challenging geoscientists to refine their models of the planet’s evolving mantle and core mechanisms. The study invites a reconsideration of how internal heat governs the interplay between mantle convection and geomagnetic phenomena, securing a pivotal advance in the geophysical sciences.
As our planet continues its ceaseless churn beneath the crust, these findings remind us that Earth’s interior is a realm of profound complexity and subtle interactions. The dance of heat and composition at the core-mantle boundary not only choreographs magnetic field generation but ultimately shapes the environment that sustains life above ground. Unlocking its secrets brings us closer to comprehending the planet’s past, present, and future in extraordinary detail.
Subject of Research: Core–Mantle Boundary Heat Flux Variations and Their Impact on Mantle Dynamics and Geodynamo Behavior
Article Title: Negative core–mantle boundary heat flux beneath low-shear-wave-velocity provinces
A SpaceX confirmou a aquisição da Anysphere, criadora do popular editor de código com IA Cursor, num negócio realizado totalmente em ações. É a concretização de uma opção firmada em abril e que chega quando as ações da empresa dispararam mais de 48% desde o preço de entrada em bolsa.
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