Jovian Gas Retrieval System - Terran Transport Vessel

The pods are launched into the atmosphere, slowed down by parachutes, which are deployed depending on the desired depth. Different gases are collected at different altitudes, so different pods require different pressure resistance, hence the different sizes (marked by color). Generally, the bigger the pod, the shallower it goes.

Some of the gases collected are liquid hydrogen and high-density helium and neon, accesible at shallow depths by large pods, and perfect for producing low performance fusion-engine gas mixtures, used by interplanetary vessels. At deeper atmospheric levels, metallic hydrogen and ultra high-density inert metals can be collected by more resilient pods, which allow the creation of fuels with extremely high energy outputs, perfect for interstellar vessels. The high demand of the latter for generation ships, provoked by the flourishing Proxima Centaury Colony, make it a key resource in modern society.

Once the gases are harvested, a chemical engine propels the pod back into orbit, where it rendezvous with the pod collector. This is a high-risk operation, and many pods are lost in each iteration. However, the high value resources collected make it profitable nonetheless. The gases are then taken to one of the many refineries orbiting Jupiter, where it's processed and packed for delivery.