Summary:
- The Sun has long-lived active regions that can last for several solar rotations, which is about 27 days.
- These active regions are "flare factories" that produce many solar flares, which are powerful bursts of energy from the Sun's surface.
- Scientists are still trying to understand why these active regions last so long and produce so many flares, as this information can help us better predict and prepare for solar activity that can impact Earth.