The Sun has just unleashed an M5-class solar flare, a powerful burst of radiation that signals a clear uptick in solar activity as the current cycle heads toward its peak. While this event is not the ...

The X5.1-class eruption from sunspot AR4274 is this year's most powerful solar flare and Earth is in the firing line. When you purchase through links on our site, we may earn an affiliate commission.

The sun ended the weekend with a bang as a sunspot rotating out of our view erupted with a powerful solar flare on Sunday afternoon. At 2:27 p.m. EST (1927 GMT) on Sunday, (Feb. 24), a X2.0 solar ...