English: A Watery Lake Is Detected on Mars, Raising the Potential for Alien Life - The discovery suggests that watery conditions beneath the icy southern polar cap may have provided one of the critical building blocks for life on the red planet.[1][2]
A view of the southern polar plain of Mars, with the Mars Express’s color-coded findings superimposed at the site where they were detected. The 12-mile-wide lake is believed to be about a mile deep.