Following the eruption of an X-class solar flare, shortwave radio blackouts were observed over southern Africa, the area ...

The northern lights may be visible along a stretch of northern states Tuesday night, and a recent solar flare could heavily ...

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 ...

The two flares of interest were measured at X7.1 and X9.1, quite high on the solar flare scale and plenty strong enough to ...

An outburst of solar energy looks primed to hit Earth on Thursday, potentially bringing auroras to the northern U.S. on ...