It appears widely in natural phenomena
as in the magnetic field of a neutron star
or in smoke rings

A hypersphere is a sphere
having more than three dimensions.
The universe of relativity and quantum physics
can be seen as a torus, or donut shape.
A higher-dimensional sphere containing
black holes, white holes and wormholes.
As a model of the universe,
the hypersphere shows how things emerge in time
and are enfolded back into fabric of the universe.