MIT Team Proposes Plan for Realistic Space Refueling Depot

The idea of a spacecraft en route to a distant world docking at an orbital fueling station to refuel is an old idea long kept from becoming a reality because of the huge price tag and long-term investment required to complete such a project. But now, a team of scientists say they've come up with a way to make an outer space fueling depot an object of science fact rather than science fiction.