Image courtesy SDO/NASA.
A solar flare on June 7 unleashed a massive eruption on the sun—perhaps the biggest ever recorded, scientists say.
The solar flare itself—an unusually bright spot on the sun—was only a “moderate” event. Space observatories in the past year recorded about 70 such solar flares, each roughly ten times weaker than “extreme” flares, of which only two have occurred since 2007.