The answer is YES !. The Sun rotation varies by latitude and it rotates on its own axis once in about 27 days. How was it possible to detect the rotation of a star of surface temperature about 5800 Kelvin and located at the center of the solar system which is about 152.03 million km away from the Earth ? Sun spots. Yes, Sun spots, as the name suggests,are the darker areas on the surface of the sun. Sun spots are areas where the magnetic field is about 2,500 times stronger than Earth’s. Because of the strong magnetic field, the magnetic pressure increases while the surrounding atmospheric pressure decreases. This in turn lowers the temperature relative to its surroundings because the concentrated magnetic field inhibits the flow of hot, new gas from the sun’s interior to the surface thereby appearing darker.The number of sunspots has a cyclical increase and decrease over an approximately 11-year period known as the solar cycle. As these spots are located at the surface, they tend to move along solar disc validating the rotation of the sun on its own axis. Sun spots are not just the characteristic features of the sun. Their impact on Earth is indeed devastating. Increased sun spots correspond to increased solar activity which includes Coronal Mass Ejections(CME),solar flares and so on. These phenomena lead to geomagnetic storms, the increase in the Northern and southern lights and a possible disruption in radio transmissions and power grids.
