NASA's Curiosity rover - a mission that has spotted evidence of liquid water as well as potential signs life and habitability on Mars - has completed six years on the red planet.

Visit Outlookindia for more news: https://www.outlookindia.com

Follow Outlook here:

https://www.facebook.com/Outlookindia
https://www.twitter.com/Outlookindia
https://www.instagram.com/Outlookindia