A 20-year study suggests Mars can form salty brines twice daily for a short season each year. These fleeting water bursts could have supported microbial life and may guide future Mars missions searching for signs of habitability.

A 20-year study suggests Mars can form salty brines twice daily for a short season each year. These fleeting water bursts could have supported microbial life and may guide future Mars missions searching for signs of habitability.