The Milky Way’s halo is filled with ‘magnetic doughnuts’ as wide as 100,000 light years

The outer halo of the Milky Way is filled with magnetic fields that take the shape of vast doughnuts with diameters ranging from 12,000 to 100,000 light years, with the heart of our galaxy at their centre. These doughnut or ‘toroid’ shaped magnetic fields of the Milky Way are responsible