Hot Jupiters are the most astounding planets in the galaxy

They’re big, full of gas, and have a penchant for hanging out way too close to their parents. These “hot Jupiters” are among the most common extrasolar planets in the galaxy. Here’s what the latest science is telling us about these celestial wonders. » 8/21/13 10:09am 8/21/13 10:09am

Amazing Terraforming Projects - Real and Imaginary

Humans have been terraforming since the earliest days of agriculture. We've got a gallery showing some of the Earth's most incredible terraforming projects - as well as what terraforming might look like on other worlds. » 3/27/09 8:30am 3/27/09 8:30am

Mystery of the Off-Center Martian Ice Cap

When summer hits the south pole on Mars, only half the ice on the pole melts. This leaves behind a strangely off-center chunk of water-and-carbon-dioxide ice, as you can see in this composite satellite image of the pole in summer. After analyzing climate data for several years, researchers have figured out what… » 9/22/08 4:24pm 9/22/08 4:24pm

Spirit, the Mars Rover, Left to Die Before Its Time

The brave, unflagging Mars rover Spirit, who has lived on the Red Planet for almost four years, has been given a death sentence by the U.S. government. Right now, the little robot is resting on a sunny slope, waiting out the winter and preparing to do more tests on the Martian atmosphere. But now it looks like Spirit… » 3/25/08 7:00am 3/25/08 7:00am

Titan Rises Behind Saturn's Rings

Haze-covered Titan, a moon of Saturn with a dense, cloudy atmosphere, was mapped extensively by the recent Cassini-Huygens space probe. The probe sent back beautiful space vistas like this one, whereTitan is the glowing globe behind Saturn's rings, and tiny moon Epimetheus is the small body you see floating above it.… » 2/26/08 7:00am 2/26/08 7:00am

Sulfuric Acid Floods Created Martian "Grand Canyon"

Unusual fan-shaped features cut into the Martian surface were caused by sulfuric acid "water" exploding from underground and sweeping across the surface of the planet. Yesterday a team of European and US scientists announced this finding, which is based on satellite data from a European Space Agency satellite in… » 2/21/08 7:00am 2/21/08 7:00am