Our Increasingly Active Sun

Our Sun is becoming a busy place. Only two years ago, the Sun was emerging from a solar minimum so quiet that months would go by without even a single sunspot. In contrast, already this year and well ahead of schedule, our Sun is unusually active, already nearing solar activity levels seen a decade ago during the last solar maximum. Our increasingly active Sun was captured two weeks ago sporting numerous interesting features. The image was recorded in a single color of light called Hydrogen Alpha, color-inverted, and false colored. Spicules carpet much of the Suns face. The brightening towards the Suns edges is caused by increased absorption of relatively cool solar gas and called limb darkening. Just outside the Suns disk, several scintillating prominences protrude, while prominences on the Suns face are known as filaments and show as light streaks. Magnetically tangled active regions are both dark and light and contain cool sunspots. As our Suns magnetic field winds toward solar maximum over the next few years, whether the Suns high activity will continue to increase is unknown.