ESA’s Mars Express has spotted a rare case of a crater once filled by a lake, revealed by the presence of a delta. The delta is an ancient fan-shaped deposit of dark sediments, laid down in water. It is a reminder of Mars’ past, wetter climate. The delta is in the Eberswalde crater, in...
Dark, finger-like features that appear and extend down some Martian slopes during the warmest months of the Mars year may show activity of salty water on Mars. They fade in winter, then recur the next spring. Repeated observations by the HiRISE camera currently orbiting Mars aboard NASA’s Mars Reconnaissance Orbiter have tracked seasonal changes...
By Larry O’Hanlon, ISNS Contributor Inside Science News Service (ISNS) — For decades NASA has been “following the water” on Mars with hopes of finding signs of alien life there; or at least signs that future colonists won’t die of thirst. Now a Texas geologist has dared to revive an old, almost heretical idea...