The following GIFs capture a quietly profound moment in scientific history.
This is the first time light, in motion, has ever been caught on camera.
It's possible thanks to a new kind of camera with an exposure time one billion times shorter than a normal camera.
It was built at the Massachusetts Institute of Technology, and can take an image every two picoseconds.
That's one trillionth of a second. A picosecond is to one second as one second is to 31,700 years.
To which the only sane response is surely...
Read more, and watch the full video, at BBC.co.uk.