NASA's Solar Dynamics Observatory captured sunspot AR3386 blast a long-duration X1.6-class solar flare and X1 flare. See time-lapses of the flares in multiple wavelengths. Credit Space.com | footage c ...

Sunspot 3912 erupted with an X2-class solar flare.NOAA's GOES-R satellite captures footage of the blast in multiple ...

Since Galileo first observed them through his telescope in the early 1600s, sunspots have fascinated scientists.