Stell is on an another lifeless world, still searching. This particular world has little to no atmosphere. But that doesn't seem to bother Stell at all. His Core produces all the oxigen his body requires, and the lack of air pressure is mitigated with the fact that his body structure can function well in low pressure to vacuum environments. As well as his resitance to cosmic radiation makes him feel comfortable in such dangerous conditions. And since his Core maintains his body heat on optimal levels, there is no risk of freezing.
The search continues.