What are sunspots?
Sunspots are comparatively dark areas on the Sun which appear in the form of spots on the Sun’s disc.
What causes sunspots?
Internal disturbances in the Sun’s magnetic field manifest themselves as sunspots on the Sun’s surface.
What is the temperature of a sunspot?
About 4,0000C which is cooler than the rest of the surface of the Sun. Hence, the sunspot appears as a dark patch, though it is really very bright.
How large are sunspots?
Some sunspots may even be five times larger than the Earth.
Are sunspots permanent?
No. Sunspot appears and disappear and also undergo change in size.
How powerful is the magnetic field at a sunspot?
The magnetic field at a sunspot is several thousand times stronger than Earth’s average magnetic field.
How long do sunspots last?
Small sunspots survive only for few hours, while larger ones may persist for a few months.