old glacier's remnants have been discovered on Mars.

The remains of a glacier have been found near the Martian equator, suggesting that some form of water could still exist in a region on the red planet where humans may one day land. The ice mass is no longer there, but scientists spotted telltale remains among other mineral deposits near Mars' equatorial region. When scientists took a closer look, they recognized the features of a glacier, including ridges called moraines and crevasse fields. The findings were shared at the 54th Lunar and Planetary Science Conference in The Woodlands, Texas. Dr. Pascal Lee, a senior planetary scientist with the SETI Institute and the Mars Institute, said that salt formed on top of a glacier while preserving the shape of the ice below.