 |
|
|
 |
|
The number of sunspots increases and decreases over time in a regular,
approximately 11-year cycle, called the sunspot cycle.
The exact length
of the cycle can vary. It has been as short as eight years and as long
as fourteen, but the number of sunspots always increases over time, and
then returns to low again.
Click on the link below to see the interesting video regarding the the Solar Cycle!
http://www.youtube.com/watch?v=6nTdpM04o4g&feature=player_embedded
|
|
 |