On the Sun, the process of fusion is driven by the Sun’s immense gravitational force and high temperatures that cause the hydrogen atoms to become electrically charged and attain the ‘plasma’ state, which is the ionized fourth state of matter. To replicate the fusion process on Earth a slightly different approach is required. This involves the use of heavier hydrogen isotopes – deuterium (D), which is readily available from water, and tritium (T) – and temperatures almost six times hotter than the core of the Sun. This exceedingly high temperature is critical to the process in the Sun’s core. The lack of an equally high gravitational force on Earth is compensated by using nuclei.