The icy, potentially habitable saturnian moon Enceladus, which sports intriguing plumes that spray material into space, "may be one of our best chances to find extant [still existing] life in our solar system," according to Regis Ferriere, Associate Professor of Ecology and Evolutionary Biology at the University of Arizona. The most recent decadal survey for planetary science proposes a dedicated mission to Enceladus that would arrive in the 2050s.