While headlines chase AI start‑ups and moon rockets, a different kind of mega‑project is taking shape at CERN: a colossal ring that would smash particles together so violently that the laws of nature have nowhere left to hide.
A billionaire boost for pure science
A group of tech tycoons and science philanthropists has pledged around €850–860 million to help fund the Future Circular Collider (FCC), a proposed successor to CERN’s current workhorse, the Large Hadron Collider (LHC).
The gesture stands out for one simple reason: there is no business model. No IPO, no commercial product, no patents lined up. Just a promise of better knowledge about how reality works.
The FCC aims to push particle collisions to unprecedented energies, in search of cracks in today’s leading theory of physics.
The funding comes from a small circle of ultra‑wealthy backers, including the Breakthrough Prize Foundation, Eric and Wendy Schmidt, industrialist John Elkann, and French entrepreneur Xavier Niel. They are joining forces with Europe’s governments, which traditionally carry the load for CERN’s budget.
For a field used to public money and slow negotiations between states, that kind of private support marks a cultural shift. It sends a signal that frontier physics now speaks to more than just academics and career scientists.
What exactly is the FCC?
A ring bigger than Paris
The headline number is hard to ignore: the FCC’s planned tunnel would stretch to about 91 kilometres in circumference beneath the Geneva region, crossing under French and Swiss territory. That is roughly three times the size of Paris’s ring road and about 15 times longer than the current LHC tunnel, which measures 27 kilometres.
Inside that ring, beams of particles would race in opposite directions at speeds extremely close to the speed of light. Powerful superconducting magnets would steer and focus the beams before they crash into each other at specific collision points, surrounded by gargantuan detectors.
The LHC already runs at energies never reached before, and it delivered the Higgs boson in 2012, earning a Nobel Prize a year later. The FCC would crank those energies up again and, crucially, increase the precision with which scientists can study known particles.
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One of the FCC’s core goals is to dissect the Higgs boson with far greater accuracy, looking for tiny deviations that hint at new physics.
Chasing dark matter and other gaps in the model
Modern particle physics rests on the Standard Model, a framework that has survived every experimental test so far. Yet it fails to explain some big facts about the universe: why gravity behaves so differently from other forces, where dark matter hides, or why there is more matter than antimatter.
By smashing particles together at much higher energies and with far larger data samples, the FCC could:
- Measure the Higgs boson’s properties with unprecedented precision
- Search for new particles that could make up dark matter
- Test whether known forces really behave the same for all particles
- Probe hints of “extra” dimensions or new symmetries in nature
In particle physics, even a small discrepancy between prediction and measurement can signal a whole new layer of reality. The FCC effectively gives researchers a bigger magnifying glass and a stronger hammer at the same time.
CERN’s long game: from post‑war pact to mega‑lab
To understand why the FCC matters, it helps to look at the track record of the organisation behind it. CERN started in 1954, when twelve European countries, still recovering from World War II, agreed to build a joint research centre instead of rival military labs.
Today, CERN has 23 member states, welcomes scientists from more than 110 nationalities, and supports around 17,000 researchers who use its facilities and data. Its annual budget sits at about €1.35 billion, funded primarily by European governments.
| CERN at a glance | Key figures |
|---|---|
| Year founded | 1954 |
| Member states | 23 |
| Scientists involved | ≈17,000 |
| Current collider circumference (LHC) | 27 km |
| Scientific publications per year | 3,000+ |
| Annual budget | ≈€1.35 billion |
Beyond the famous Higgs discovery, CERN’s labs have helped shape technologies that escaped the lab entirely. The World Wide Web began as a tool for CERN physicists to share documents. Advances in superconducting magnets, cryogenics, and vacuum engineering fed into medical scanners, space hardware, and industrial systems.
Supporters of the FCC argue that the new collider would repeat that cycle on an even bigger scale, pushing engineering in fields like power distribution, data processing, and advanced materials.
Private money in a public lab
Why billionaires care about fundamental physics
Until now, CERN’s flagship projects relied on public funding negotiated between member governments, often over many years. The recent philanthropic pledge for the FCC does not replace that system, and it will cover only about 4–5% of the estimated total cost, which could approach €20 billion.
Yet the gesture changes the narrative. When former Google chief Eric Schmidt backs a particle collider, he sends a message that pure research has value beyond curiosity. Foundations see potential in the spin‑off technologies: ultra‑fast electronics, better simulations, more efficient data centres, and perhaps new approaches to energy management.
For donors, the FCC sits at the intersection of big questions about the universe and hard engineering problems that may reshape everyday technology.
CERN director Fabiola Gianotti has framed this private support as a recognition that basic research plays a social role, not just an academic one. The lab already fuels collaborations with hospitals, cybersecurity teams, and climate scientists. A next‑generation collider would broaden that network.
Where the project stands on the timeline
The FCC is not yet approved. It sits inside a roadmap for European particle physics, which is undergoing a strategic update. A political and scientific decision is expected around 2028, after extensive technical and environmental studies.
If green‑lit, construction would likely take around a decade. That includes deep geological surveys, excavation of about 91 kilometres of tunnel, installation of magnets and cryogenic systems, and the building of detectors the size of cathedrals.
European institutions already list the FCC among a set of “moonshot”‑style projects envisioned for the period 2028–2034, alongside big bets in energy, climate, and health. That label signals long timelines and large risks, but also major potential payoffs in knowledge and technology.
Big science, big holes in the ground
A 91 km tunnel and nine million cubic metres of rock
Digging a new tunnel under the Geneva basin raises obvious questions: where does all the rock go, and how much disruption will local communities see?
CERN teams are already working with geologists and environmental experts on digital models of the region. The plan involves detailed mapping of underground formations, fault lines, and groundwater layers, aiming to minimise seismic risk and damage to ecosystems.
The excavation itself would generate around nine million cubic metres of material. Engineers are studying ways to reuse much of that rock for construction, landscaping, or industrial applications instead of turning it into waste.
The FCC project couples scientific ambition with a test case in large‑scale, low‑waste construction beneath a densely populated region.
Local authorities in Switzerland and France would have a say on noise, traffic, and zoning during the works. Long lead times give room for public consultations and environmental impact assessments before any tunnel boring begins.
What non‑physicists might want to know
Key terms without the jargon
For anyone not fluent in particle physics, a few basic ideas help make sense of the hype:
- Particle collider: A machine that accelerates tiny particles, such as protons or electrons, to high energies and then makes them smash into each other, so detectors can record what comes out.
- Higgs boson: A particle associated with a field that gives mass to other fundamental particles. Measuring it precisely may reveal new physics hiding behind it.
- Dark matter: A mysterious form of matter that does not emit light but appears to shape galaxies through gravity. So far, it has not been seen directly.
- Standard Model: The main theory describing known particles and forces (except gravity). Extremely successful, but incomplete.
In simple terms, the FCC extends the current toolbox. It lets scientists smash things harder and measure the debris more accurately, in the hope that nature reveals a crack in the Standard Model’s calm surface.
What happens if the FCC finds “nothing new”?
One scenario worries some critics: a multibillion‑euro collider that confirms the existing theory again and again, with no dramatic discovery. Physicists see that risk very differently.
If the FCC measures the Higgs and other particles with exquisite precision and still finds no deviation, that outcome sharpens the puzzle. The allowed space for new theories shrinks. Competing ideas about dark matter or extra dimensions can be ruled out, forcing the community toward better, more constrained explanations.
There is also the track record of indirect benefits. Training thousands of young engineers on some of the most complex machines on Earth tends to ripple out into industry, medicine, and computing. Even a “boring” physics result can leave a deep technological footprint.
For the billionaire donors, this mix of cosmic curiosity, high‑risk science and tangible engineering progress appears to be worth the bet. For Europe, the FCC debate will test how far the continent wants to go in backing curiosity‑driven research at continental scale.