solar system

NASA has released this week the best views yet of a bizarre hexagon-shaped cloud that blankets Saturn’s north polar region, courtesy of the Cassini spacecraft.  First seen by the Voyager probe during its flyby in the early 1980s, this six-sided weather system stretches 15,000 miles (25,000 kilometers) across and contains storms of various sizes, including a distinct vortex that appears to...

There appears to be no shortage of wannabe planetary colonists willing to live—and possibly die on Mars. Mars One—a controversial project that aims to send humans on a one-way trip to the Red Planet by 2023—has garnered interest from 202,586 folks from more than 140 countries who sent in video applications. (Related: “Best Video Applications...

There appears to be no shortage of wannabe planetary colonists willing to live—and possibly die on Mars. Mars One—a controversial project that aims to send humans on a one-way trip to the Red Planet by 2023—has garnered interest from 202,586 folks from more than 140 countries who sent in video applications. (Related: “Best Video Applications...

With tantalizing hints of a global salty ocean lying beneath a layer of fractured ice, Jupiter‘s moon Europa has been catapulted to the top of the list of suitable homes for ETs in the solar system. Now NASA has begun mapping out what a future mission to this intriguing worldlet may look like. A new...

With tantalizing hints of a global salty ocean lying beneath a layer of fractured ice, Jupiter‘s moon Europa has been catapulted to the top of the list of suitable homes for ETs in the solar system. Now NASA has begun mapping out what a future mission to this intriguing worldlet may look like. A new...

  Despite traveling 36 years and 11 billion miles (18 billion kilometers) from home, the intrepid Voyager 1 spacecraft still has not left the solar neighborhood. But all indications are that it is now crossing a major threshold to the rest of the galaxy. (Related: “Voyager at the Edge: Cosmic Roadtrip Hits Milestone.” ) New...

  Despite traveling 36 years and 11 billion miles (18 billion kilometers) from home, the intrepid Voyager 1 spacecraft still has not left the solar neighborhood. But all indications are that it is now crossing a major threshold to the rest of the galaxy. (Related: “Voyager at the Edge: Cosmic Roadtrip Hits Milestone.” ) New...