SNR 0509-67.5 is the last gasp of a massive star snuffed out in a titanic explosion 400 years ago. In 2012, Hubble spied this 23-light-year-wide supernova blast wave expanding at speeds of 11 million miles per hour. It is located in a Milky Way satellite galaxy called the Large Magellanic Cloud, about 170,000 light-years from Earth (National Geographic)
'Soap Bubble Nebula' - This is one huge bubble... as large as our Solar System.
In the realm of theory, the first appearance of fractals in cosmology was likely with Andrei Linde’s "Eternally Existing Self-Reproducing Chaotic Inflationary Universe" theory, in 1986. In this theory, the evolution of a scalar field creates peaks that become nucleation points which cause inflating patches of space to develop into "bubble universes," making the universe fractal on the very largest scales. Is our universe a subset of a more infinite "Mandelbrot Set", repeating over and over?
This kaleidoscopic image is a wave function, illustrating the locational probabilities of an excited subatomic particle. The particle is more likely to be in the red areas than in the green; it is least likely to be in the black spaces. Using other particles or magnetic and electric fields, the area can be manipulated into different shapes, in this case, a heartlike shape called a cardioid.