NASA's Cassini spacecraft this week identified the source of geyserlike jets of ice erupting from Saturn's moon Enceladus. Photos captured during a flyby showed icy chunks tens of yards (meters) in size around surface cracks dubbed "tiger stripes" for their dark, streaky appearance against the white backdrop of the moon's frozen surface (shown here in false color). These V-shaped fissures plunge up to 1,000 feet (300 meters) deep, perhaps making contact with a liquid water ocean that researchers believe lies beneath the ice. To get these pics—the most detailed yet of the moon's ice-spewing southern hemisphere—researchers placed their bets on a technique they called "skeet shooting": pointing Cassini's camera ahead of Enceladus and then rapidly rotating the craft as it zipped past the moon at 40,000 miles (64,000 kilometers) per hour to prolong the exposure time. "Calculate and cross your fingers" just didn't have the same ring to it.