Magnetic ‘glue’ helps shape galaxies
Map shows how patterns align, suggesting way to keep spiral arms stable
![galaxy IC 342 with magnetic fields](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/06/cc_magneticspiral_free.jpg?fit=860%2C460&ssl=1)
SPACE SWIRL Magnetic fields (yellow lines) closely match the spiral pattern of galaxy IC 342 (pictured), suggesting that magnetism might help hold the spiral arms together.
R. Beck/MPIfR, NRAO/AUI/NSF; U. Klein/AIfA (graphics); T.A. Rector/University of Alaska