During a total solar eclipse, our view of the Sun's disk is blocked entirely by the Moon. The Sun's corona, however, remains very much in view – a roiling wreath of spellbinding atmospheric activity.

2013's first solar eclipse is a weird one: This afternoon, a stunning annular eclipse will blaze, ring-like, in Australian and Pacific skies. Here's how you can watch (even if you're not from down under).

We were afraid of this. Now that Night Shade Books is being sold off, this means a premature end to Eclipse Online, the online magazine started by Jonathan Strahan as a continuation of his acclaimed Eclipse book series.

Short stories have always been the lifeblood of the science fiction and fantasy genres, even though novels get the lion's share of the attention. There are hundreds of great stories published every year — and a large portion of them are available for free online — but many people only read the shorts in one of the…

In case you had any lingering doubts, here is some masterful cosmological/geological/geometrical instruction on our planet and its spherical — but not perfectly spherical — tendencies, courtesy of the ever-capable Henry Reich (better known as the creator, animator and narrator of MinutePhysics). Some great, if not…

One of the great bright spots in the world of short genre fiction has been Jonathan Strahan's Eclipse anthology series — Eclipse Three, in particular, was one of the best anthologies of the past decade. Following in the footsteps of Dangerous Visions and Starlight, Eclipse gathered cutting-edge stories from some of the …

On Tuesday, the planet Venus will pass between Earth and the Sun, appearing to cross the face of our star in a rare event known as a "transit." The next transit of Venus to be visible from Earth won't happen until December 2117. In other words: you don't want to miss this. Here's everything you need to know to catch a…

The Moon passed in front of the Sun yesterday, giving rise to a stunning solar eclipse visible across much of the world. A select few even got a rare glimpse of an annular (aka "ring of fire") eclipse — the first to be visible from the continental U.S. since 1994.

This weekend, the Moon will pass between Earth and the Sun, giving rise to what sky-watchers call an annular eclipse. Also known as a "ring of fire" eclipse (for reasons that the top image should make clear), it's the first annular eclipse to be visible from the continental U.S. in close to 20 years. Here's what you need …

It might take you a few moments to spot, but there is actually a full moon looming entirely within the frame of this picture, hidden in plain sight.