The speed of light, as you're probably aware, is pretty darn speedy.
But what does it actually look like? This is the question YouTubers The Slow Mo Guys set out to answer in the latest episode of their "Planet Slow Mo" series.
The video above involves a trip to Caltech and some experiments with a camera capable of filming at 10 trillion frames per second -- fast enough, in other words, to capture light moving.
The final shot, with the camera cranked up to full power, looks like something from a sci-fi movie.
