CERN just turned off its giant particle smasher (the LHC) after many years of running. They're now spending the next 4 years fixing it up and making it much stronger (High-Luminosity LHC), so it can create way more particle collisions starting in 2030. This will help scientists study things like the Higgs boson in more detail and look for new physics.Looking further ahead, they want to build an even bigger machine called the Future Circular Collider (FCC) — a huge underground ring about 3 times