These images, while they appear to be psychedelic art, are actually colorized images of the Mandelbrot set, a mathematical phenomenon. The Mandelbrot set is a pattern of geometric points that repeats within itself (meaning that any image you take of a particular section of the set can be replicated by zooming in or out) and and is infinitely complex; it is what’s known as a fractal. More info, images, and video of the Mandelbrot set can be found here.