As far as I'm aware, there's no plan for rocket refueling on Mars. That makes sense, considering that the stages we normally think of as the 'rocket' will be gone long before our pods get to Mars.
We will refuel the pod, which has its own rocket engines on it, and use that to get back up (with a tiny fraction of the original payload) from the surface. Mars' gravity well and atmosphere are a fraction of Earth's, so there's really no need for a multi-stage rocket and all that. A refueled and weight reduced pod will do it just fine.
We will refuel the pod, which has its own rocket engines on it, and use that to get back up (with a tiny fraction of the original payload) from the surface. Mars' gravity well and atmosphere are a fraction of Earth's, so there's really no need for a multi-stage rocket and all that. A refueled and weight reduced pod will do it just fine.