It sounds like the stuff of science fiction, but spaceships that travel at warp speed are possible, according to one top scientist.
In a recent study, physicist Dr Erik Lentz outlined a way that a rocket could theoretically travel faster than light – or over 186,000 miles per second.
At that speed, astronauts could reach other star systems in just a few years, allowing humanity to colonise faraway planets.
Current rocket technology would take roughly 6,300 years to reach Proxima Centauri, the closest star to our Sun.
