Liquid water may be locked in rock just a few kilometres beneath Martian ground – much closer to the surface of the red planet than previously thought.
Using data from Nasa’s now-retired InSight lander, a China-led international team of researchers analysed seismic waves from “marsquakes” and meteorite impacts recorded between 2018 and 2022. They revealed a mysterious zone in the planet’s crust they said was best explained by a layer of water-saturated rock.
