#HTE
Astroboffins ‘sprinkle iron filings’ over remnant supernova
And discover it made a magnet that points 'up’
How to measure a magnetic field that’s very long way away, and is very, very weak. An international group of boffins have announced that they figured out how.…
http://go.theregister.com/feed/www.theregister.co.uk/2018/06/14/supernova_magnetic_field_research/