Posthuman Blues

Ring of water ice on Mars raises hopes of finding life on red planet

"One image shows faint traces of water ice also visible along the rim and walls of the crater. ESA scientists know it cannot be frozen carbon dioxide because the images were taken during the late Martian summer by which time all CO2 ice has evaporated. The unnamed crater is 24 miles in diameter and 1.3 miles deep." (Via The Anomalist.)