Hyperspace travel – the ability for spaceships to travel as fast as the speed of light – is an integral part of the Star Wars universe. The new series of The Mandalorian, for instance, would be quite a different show if Mando and Grogu had to wait 6,000 years to fly from one planet to the next. But it does raise the question of just how feasible such technology is. Will we ever attain the ability to travel vast distances across space without having to burn through generations of astronauts? Or are we just marooned in our corner of the Galaxy?