Paul Malone : Movies : Given the Sun (...rotates, why is it a perfect sphere)

'Given the Sun'. Still from movie. 2017

The greatest mystery in astronomy is the fact that the Sun is a perfect sphere, even though it rotates and should be oblate. This movie addresses this phenomena with reference to the seminal 1979 paper by Ralph Juergens, 'The photosphere, is it the top or bottom of the phenomenon we call the Sun'.

Link to Juergens paper

 

Stills below : click 'Play Movie' to view