What causes the sun to rotate in that mysterious pattern?
Sorry to be slow in getting back to you, I was tied up in a meeting…. ;-( That the Sun rotates is not a mystery; when you pull the plug in the bathtub and the water rushes out it almost never goes straight down the drain, but ends up swirling to the right or the left at a good clip. There’s always a teeny tiny difference in the water going to one side or the other of the drain, and that “organizes” the water that follows. The same thing happens when a star is formed from a cloud of gas in “interstellar space”. AND, as the cloud collapses to form the star [ in our case, the star we are living with – the Sun ] the rotation speeds up more and more as the star condenses. A good analogy is of a skater spinning around, who pulls in their hands and the rotation speeds up a lot. Try it on a stool that rotates BUT BE CAREFUL!! We thought that the Sun should be rotating much faster than we observe it to be doing, so there must have been a lot of rotating matter ejected as the Sun was forming,