Journey to Enceladus and Titan

[1][2] Enceladus is a small icy moon, seemingly similar in chemical makeup to comets,[3] with jets or geysers of water erupting from its surface that might be connected to active hydrothermal vents at its subsurface water ocean floor,[4][5][6][7][8] where the moon's ocean meets the underlying rock, a prime habitat for life.

[9][10] The geysers could provide easy access for sampling the moon's subsurface ocean, and if there is microbial life in it, ice particles from the sea could contain the evidence astrobiologists need to identify them.

[12] In June 2015 NASA announced a list of five finalists for the current competition, but the Journey to Enceladus and Titan proposal was not selected.

[12][14] At Enceladus, the mission will determine composition and flux of material in the plume, and will produce temperature maps of the faults, tectonics and interior dynamics.

[14] At Titan, it will characterize of the organic molecules in the upper atmosphere at different altitudes (> 900 km) and latitudes, and will produce high-resolution images for detailed study of features forming at different time-scales.

Enceladus full view
Enceladus's south pole - Geysers spray water from many locations along the ' tiger stripes ' feature.
Titan's mystery clouds
Near-infrared radiation from the Sun reflecting off Titan's hydrocarbon seas.