Fractal refers to a geometric shape that is complex and detailed, yet similar at any level of magnification. Examples include a rugged coastline which when seen from space becomes ever more complex as the viewer moves closer.
Coastlines turn into rugged boulders, then into sand, and then finally into sub-atomic particles.
Yet at every level of magnification the pattern is similar. If you look closely at a fern, for example, you will see the same pattern reproduced at every level. The leaves seem to be made up of miniature ferns - repeating the shape of the whole in ever decreasing sizes. W e live in a fractal Universe. Our Sun is just one star among billions of stars which make up our Milky Way Galaxy.