Mars to Stay

US space agency NASA believes it can put humans on Mars within 25 years but the technological and medical hurdles are immense, reported Aljazeera.

Deadly radiation from the cosmos, potential vision loss, and atrophying bones are just some of the challenges scientists must overcome before any future astronaut can set foot on the Red Planet, top NASA officials said on Tuesday.

Nasa has been forced to confirm that there almost certainly isn't a long-lost civilisation on Mars, reported The Independent.

During a hearing in the US congress, high-ranking staff of the space agency were asked whether there might once have been people living on the red planet.