Ancient Mars had long-lasting lakes of liquid water
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/10/ticker_galecrater_water-recrop.jpg?fit=860%2C460&ssl=1)
Rocks sampled by the Curiosity rover suggest that Gale Crater once contained liquid water lakes that endured for potentially thousands of years at a time, shown in this artist’s illustration.
JPL-Caltech/NASA, ESA, DLR, FU Berlin, MSSS