<P> Solar rotation varies with latitude because the Sun is composed of a gaseous plasma . The rate of rotation is observed to be fastest at the equator (latitude φ = 0 °), and to decrease as latitude increases . The solar rotation period is 24.47 days at the equator and almost 38 days at the poles . The differential rotation rate is usually described by the equation: </P> <Dl> <Dd> ω = A + B sin 2 ⁡ (φ) + C sin 4 ⁡ (φ) (\ displaystyle \ omega = A + B \, \ sin ^ (2) (\ varphi) + C \, \ sin ^ (4) (\ varphi)) </Dd> </Dl>

What is the rotation speed of the sun