Scientists have discovered a mysterious hole on Mars they say could potentially "contain life". Nasa said the hole could be ...

A MYSTERIOUS hole on Mars could be harbouring alien life in an extensive network of underground tunnels, according to Nasa. From orbit, scientists have captured a deep pit on the Red Planet that ...

Nasa has admitted that a massive hole on Mars could be a "portal" leading to an underground world of alien life. The American space agency shared an image of the 300-foot-wide opening in the Martian ...

Unlike our lovely Earth, Mars won't shield us from blasts of cosmic radiation. If we hope to live there, we'll need to equip our future colonies with underground tunnels, Robert Zubrin ...

Those could even connect to potential tunnels underneath the surface ... so that astronauts could stop off as they head to Mars, for instance. But those long journeys will be dangerous ...