An international team of researchers have discovered what could be the key to controlled nuclear fusion. The first steps towards observing the process, known as ‘fast ignition’, have been taken by a team from the University of California and General Atomics. ‘Fast ignition’ is the process of initiating nuclear fusion reactions by using a high-intensity laser. The team of researchers, mainly formed of scientists and engineers, have achieved this thanks to a new energy / X-Ray imaging technique.