After last week's explosive X-flare, sunspot AR4046 is at it again! Could this latest eruption bring stormy space weather to Earth?

Solar flares wreaked havoc with communications back in 1859, but that's nothing compared to the devastation they would cause ...

Well, that’s a bit dramatic (it explodes a lot) — 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 ...