The standard model of the Sun used to be a radiating sphere powered by nuclear furnace at its core and where sunspots were upwellings of convection cells below the photosphere.
A star like the Sun has an internal driving in the form of a magnetic field that can be seen on the surface as sunspots. Now astrophysicists from the Niels Bohr Institute have observed a distant star in the constellation Andromeda with a different positioning of sunspots and this indicates a magnetic field that is driven by completely different internal dynamics. The results are published in the scientific journal, Nature. (H/T Athony Watts)
The first sentence is a bit of a dog’s breakfast though, ‘an internal driving in the form of a magnetic field’.
They have yet to arrive at the next step of recognising the activity of electric currents producing the magnetic fields.
At least they now don’t have to perform intellectual gymnastics to explain how a nuclear furnace can generate magnetic fields.