b'12 Carnegie Science|Spring/Summer 2020How EnceladusGot Its StripesThe Cassini mission, launched in 1997, took seven years to reach Saturn. The mission was the first to orbit Saturn and the first to sample an extraterrestrial ocean. The enhanced-color image of Enceladus at right was taken by Cassini and shows southern latitudes including the so-called tiger stripes at bottom. The artistic rendering at far right (not to scale) shows the interior of the moon, including a liquid water ocean under the icy crust. Images courtesy NASA/JPL-Caltech/Space Science InstituteS aturns icy moon Enceladus has a subsurface ocean, making it a prime target for searching for extraterrestrial life. New research led by Carnegies Doug Hemingway reveals the physics governing the fissures through which ocean water erupts from the moons icy surface, giving its south pole an unusual tiger stripe appearance.First seen by the Cassini mission to Saturn, these stripes are like nothing else known in our Solar System, Hemingway explained. They are parallel and evenly spaced, about 80 miles (130 kilometers) long and 20 miles (35 kilometers) apart. What makes them especially interesting is that they are continually erupting with water ice. No other icy planets or moons have anything quite like them. Working with Max Rudolph of the University of California, Davis, and Michael Manga of the University of California, Berkeley, Hemingway used models to investigate the physical Lead author Doug Hemingway joined Carnegie as a postdoctoral fellow in 2018. He studies planetary geophysics, interior modelingforces acting on Enceladus that allow the tiger stripe fissures to from gravitational and magnetic field data, icy ocean worlds,form and remain. Nature Astronomy published their findings.planetary magnetism, and space weathering. Image courtesy Carnegie Institution for Science The team investigated why the stripes are present only on the moons south pole and why the cracks are so evenly spaced. They revealed that the tiger stripe fissures could have formed on either pole, but the south just happened to split first.'