How this cosmic map of magnetic fields could help illuminate one of the universe’s most mysterious forces

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Originally published byThe Guardian Australia

Light from nearly 4m galaxies measured as it twisted and travelled through intergalactic space

A cosmic map of magnetic fields – the largest ever produced – could help scientists delve into one of the major and most mysterious forces in the universe.

A global team led by Australia’s national science agency, the CSIRO charted the magnetic fields by measuring light from nearly 4m galaxies as it twisted and travelled through intergalactic space.