Without the shuttle fleet, how will they reboost the space station?
The space station has two large engines that can be used to do a reboost, using fuel from the station’s onboard tanks. Russia has an unmanned cargo spacecraft called Progress which can carry fuel, food, and other supplies to the station. Most of the time, space station reboosts are performed by the Progress’s engines, to save the space station’s own engines from wear. Europe is building a resupply spacecraft of its own, which will be able to carry much more cargo and fuel than the Progress. It is due to enter service in a year or two.
