A erupted with M1 and M6 class solar flares. Watch the fireworks in these views from NASA's Solar Dynamics Observatory.

Here's how the astronomical phenomenon influences our planet—from the length of our seasons to the way Earth moves through ...

At the farthest edge of the Sun’s influence, the Voyager probes have stumbled into something that sounds almost mythic: a ...

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...

In a year packed full of phenomenal cometary capers, astrophotographer Dan Bartlett captured a staggering image of comet ...

Kicking off the year's cosmic wonders is the moon, drawing the first astronauts to visit in more than 50 years as well as a ...