This is what a nuclear bomb looks like one millisecond after it goes off.
The spikes at the bottom of the sphere illustrate what’s called “rope trick” effects.
The image was taken using a rapatronic camera, a kind of high-speed camera invented to take images with shutter speeds faster than mechanical shutters are able to go.
More on the rapatronic images of the 1952 Tumbler-Snapper nuclear experiments here, at DamnInteresting.com, with more images here, at SimpleThinking.com.