The logarithmic spiral was first described by Descartes
galaxies filled with stars ...pentagrams
New Grange entrance
spirals
Jet streams tornados and hurricanes .....spirals
Black Holes
Black holes of stellar mass are expected to form when very massive stars collapse at the end of their life cycle.
it happens at the death of a star
or a wormhole
a "shortcut" through spacetime. A wormhole is much like a tunnel with two ends each in separate points in spacetime. A wormhole would be an unvisualisable structure of 4 or more dimensions.