An article published in the journal “Nature Astronomy” describes the measurement of the magnetic field of a galaxy that is nearly 5 billion light-years away from Earth, the farthest of which such a detection has been made. A team of researchers used the Very Large Array (VLA) to detect it not directly but thanks to a kind of magnetic footprint called Faraday effect that reached the Earth thanks to the light coming from a quasar that appears to us behind the galaxy studied.