Scientists, THIS WEEK, discovered a reservoir of liquid water on Mars. The findings come from a new analysis of data from Nasa's Mars Insight Lander, which touched down on the planet back in 2018. While there is water frozen at the Martian poles and evidence of vapour in the atmosphere, this is the first time liquid water has been found on the planet. The scientists point out that the location of this Martian groundwater is however not good news for plans to colonise Mars as this repository is so deep and unreachable that it might as well be in another galaxy