Fusion – when will it happen?

Thermonuclear fusion is a rapidly developing field aiming to create a reactor based on the fusion of hydrogen atoms — a zero-emission energy source that is inherently safe, virtually waste-free, and powered by an abundantly available fuel. But there’s a catch to this dream: we need to keep one of the hottest and one of the coldest places in our Solar System just two meters apart. How is that even possible? What are the main…