Sebastiano Bernuzzi

A neutron star is a sphere the size of a city but with the mass of an entire Sun. Its magnetic field can tear atoms apart from thousands of kilometers away. Yet until now, it was a mystery how this field is arranged inside: whether it is twisted into tight ropes or more like neat lines radiating from the poles.

A stone falls into a pond. Ripples spread, weaken, and soon vanish. But if the pond were infinite and the water perfect, the disturbance would last forever, gradually fading. In physics, such decaying remnants are called "tails"—they live long after the main wave has passed.