OK. We're off. Water ice found just below the surface of Mars. Good enough for us. Let's go. Impulse power, Mr Sulu
https://www.theregister.co.uk/2019/12/12/mars_water_ice/
There’s water ice buried below the surface of Mars, and all you’ll need is a shovel to dig some up, according to research published in Geophysical Research Letters this week.
“Our results are consistent with widespread water ice at latitudes as low as 35°N/45°S buried sometimes a few cm below sand‐like material, with high lateral ice depth variability, and correlated with periglacial features,” the abstract reads.