Is hydrodynamic escape from Titan possible?

► We model N2 and CH4 molecules in Titan's exosphere applying a Monte Carlo model. ► From the density and velocity profiles, we compute their collision probabilities. ► Most collisions occur in the first 400 km with N2, CH4 and HCN molecules. ► Very few collisions occur in higher regions with lighter, faster particles. ► N2 and CH4 molecules in Titan's exosphere do not gain escape velocity.