The basic pattern of the circle with a center is found in nature and is seen in biology, geology, chemistry, physics and astronomy.
On our planet, living things are made of cells and each cell has a
nucleus–-all display circles with centers. The crystals that form ice, rocks, and mountains are made of atoms. Each atom is a mandala.
Within the Milky Way galaxy is our solar system and within our solar system is Earth. Each is a mandala that is part of a larger mandala.
Flowers, spider webs, and the rings found in tree trunks all reflect the primal mandala pattern. The "circle with a center" pattern is the basic structure of creation that is reflected from the micro to the macro in the world as we know it.