Earth & Space

Starting 6/30, you can actually see the planet Mercury with the naked eye, a rare treat for stargazers. Check out the west-northwestern horizon for a glimpse of our rocky neighboring planet.

Apparently, getting sleep while stationed on a space station really blows. NASA's trying to change that, by monitoring the sleep habits of their astronauts.

In a slightly melancholic news announcement, NASA has released more details about their last space shuttle mission, which is scheduled to begin this July.

NASA's lunar spacecraft has sent back over 192 Terabytes of data -- including some gorgeous new photos of the moon's terrain.

NASA's Cassini spacecraft has captured exciting new imagery, which shows evidence for the existence of liquid water on one of Saturn's moons.

To help you avoid becoming a creepy albino lightning freak like that kid from "Powder", NASA is going to have one of their scientists available this Thursday to answer any of your lightning-related questions.

Millions of NASA photos need to be scanned for icy objects before the New Horizons spacecraft flies by Pluto in 2015. NASA has teamed up with IceHunters to give you the ability to be part of the search.

Scientists have spent centuries studying our solar system. However, apparently we don't know everything about one of our closest planetary neighbors.

Jets of lighting can shoot upward toward space, and reach distances 50 miles above the Earth's surface. Harness this and we have a pretty sweet anti-everything weapon.

No one can actually see it. No one knows what it is or how it works. But, after a five-year study of 200,000 galaxies, scientists are as certain as they'll ever be that dark energy exists, and it is tearing our universe apart.