Fractures, or “tiger stripes,” where icy jets erupt on Saturn’s moon Enceladus will be the target of a close flyby by the Cassini spacecraft on Monday, Aug. 11. Cassini will zoom past the tiny moon a mere 50 kilometers (30 miles) from the surface. Just after closest approach, all of the spacecraft’s cameras — covering infrared wavelengths, where temperatures are mapped, as well as visible light and ultraviolet — will focus on the fissures running along the moon’s south pole. That is where the jets of icy water vapor emanate and erupt hundreds of miles into space.