wow.gm - Space probe Cassini performed a close flyby of Saturn's icy moon Enceladus on Wednesday. The fate of the $3.5 billion mission was in the balance as the bus-sized spacecraft swooped to just 50 km (30 mi) above the surface of Enceladus to sample the frozen spray issuing from geysers on the the moon's surface. The "water" spraying from these geysers is in the form of dust-sized, frozen water particles, which are ejected into space by gaseous water vapors that build up pressure deep within icy...» view full story