Cassini eyes youthful-looking Saturnian moon

On July 14, the Cassini spacecraft came within 175 kilometers of Saturn’s tiny moon Enceladus, the nearest that the craft has come to any of the ringed planet’s satellites. Images taken at close range reveal a terrain of faults, folds, and ridges nearly devoid of craters. That landscape suggests that old pockmarks have been erased by recent geological activity, perhaps only tens of millions of years ago.