Three top-tier X-class solar flares launched off ... are ranked on a scale that goes from A, B and C to M and X, in increasing order of intensity. They usually originate from sunspots, or ...

but a particularly large sunspot named AR2781 produced a C5-class solar flare which is a medium-sized explosion even for the Sun. Flares range from A, B, C, M, and X with a zero to nine scale in ...

Solar flares are classified on a 4-class scale, and as the scale goes up in class, each flare is ten times stronger than the class beneath it. X-class flares remain in the top spot as the ...

See and hear for yourself how the number of flares and their intensity increase, a clear sign of the sun approaching the peak of the 11-year solar cycle. This video combines ultraviolet images of ...

“While solar flares can affect communication systems, radar, and Global Positioning Systems, based on the intensity of these ...