Mars rover Curiosity sees key water indicator

Help

The US space agency (Nasa) has reported that its Curiosity rover has made another significant discovery on Mars.

The robot has drilled into a rock that contains clay minerals - an indication of formation in, or substantial alteration by, neutral water.

Scientists say the find is one more step towards showing conditions on the Red Planet in the distant past could have supported life.

Pallab Ghosh reports

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.