The Surface and the Core Don’t Spin Together
The Sun does not rotate like a solid ball. Its equator turns in about 25.6 days, while its poles take about 33.5 days.Sun Rotation: The Sun Spins Unevenly
The Young Sun Was Wilder
A survey of solar analogues suggests the early Sun may have spun up to ten times faster than it does now. That likely made its surface much more active, with stronger X-ray and UV emission.Sun Rotation: The Sun Spins Unevenly
