This is an animation of a flame fractal of the type "Electric Sheep". The animation performs a 360 degree turn and when looped, it creates a smooth continuous endless motion.
I was disappointed by the resolution of the available flame fractals and decided to create my own at 1280*720. If this also seems a bit low, I may add that the processing needed for the film took 65 computing hours on a powerful laptop. I would have loved to double the pixel count, the rendering depth and number of frames needed for a full rotation of the image, which would have made it into a +500 hour project instead. I will leave that to you :-)
Tech-info: Each frame was generated by Apophysis, using a script based on this (http://www.apophysis.org/forums/viewtopic.php?f=2&t=770), and the frames were processed into a film with VirtualDub. The flame code for the electric sheep (Generation 244 - Sheep 36903) is available at http://v2d7c.sheepserver.net/cgi/dead.cgi?id=36903&detail=motion - I have zoomed in on the picture and turned the script loose on that part.