DRAGONFLY: A ROTORCRAFT-LANDER TO EXPLORE TITAN'S PREBIOTIC CHEMISTRY AND HABITABILITY
Placing the samples in the proper geological context, however, will be key to understanding their astrobiological significance. In addition to the subsurface ocean, potentially habitable environments include transient liquid water oases created from cryovolcanic flows or impact into the ice crust. These different environments have different cooling times, so discerning whether sampled material comes from eroded crust, cryovolcanic flow, or impact melt, constrains the timescales for aqueous chemistry to have modified organic material. Dragonfly would conduct an imaging campaign to establish the local provenance of materials.
The geologic processes that govern the distribution of surface organics govern their availability to mix with liquid water or liquid methane at the surface, or with the subsurface ocean. Titan’s vast sand seas are a source of easily transported organics that could represent material collected from all over Titan. Measurements of the composition of the sand will help to determine the currently unknown process by which the sand particles form. Dragonfly would also conduct saltation experiments to establish how sands are transported across the surface. To investigate geologic processes with the potential to exchange material within Titan’s ice shell, Dragonfly would document structural geology and listen for seismic activity.