@Polaris 17 March 2021 more from that month

🔴 🌊 Billions of years ago, evidence shows, water flowed across Mars & collected into pools, lakes, & oceans. New research shows a substantial quantity of the water — between 30 and 99% — is trapped within minerals in the planet’s crust. Explore the findings: https://go.nasa.gov/2OHCECB -NASA #Space