The moon will pass directly in front of the sun on Feb. 17, setting the stage for a dramatic annular solar eclipse.

Outer space contains more incredible phenomenons and unsolved mysteries than anywhere else—and we think it's just fascinating ...

A free tool for serious compositing work ...

Close-up observations of the Sun explain how solar flares start, grow, and send high-energy particles racing through space.

An impulsive X4.2 solar flare sparked strong radio blackouts across Africa and Europe as the giant sunspot continues to rage.

Dr. Athiray Panchapakesan at UAH leads a $1.27M NASA-backed mission to study solar flares' impact on Earth, aiming to improve ...

But best be quick, it might not be visible for long!