Alien Life

Researchers discuss a new classification system as a way of thinking about sustainability on a planetary scale.

As NASA's twin Voyager spacecraft were changing our understanding of the solar system, they also spurred a leap in spacecraft communications.

Engineers explore ways to sample and identify living microbes in the outer solar system.

NASA's Mars Exploration Rover Opportunity recorded a panoramic view before entering the upper end of a fluid-carved valley that descends the inner slope of a large crater's rim.

Scientists have identified and named a new species of dinosaur in honour of renowned Canadian palaeontologist Dr. Philip J. Currie.

Such a structure could be detected on other worlds.

In the icy bodies around our solar system, radiation emitted from rocky cores could break up water molecules and support hydrogen-eating microbes.

As it drives uphill from a band of rippled sand dunes, NASA's Curiosity Mars rover is toting a fistful of dark sand for onboard analysis that will complete the rover's investigation of those dunes.

Scientists discuss options for finding life outside our solar system.

Chile's Atacama Desert is the driest non-polar desert on Earth -- and a ready analog for Mars' rugged, arid terrain.