The Automated Transfer vehicle is designed to supply the International Space Station with water, air, payload experiments and the like. In addition, the ATV can re-boost the station, restoring its orbit. It is an unmanned spacecraft launched with an Ariane 5.
... is:
6H2O + 6CO2 + light → C6H12O6 (glucose) + 6O2
In simple English terms, this is carbon dioxide plus water plus light (energy) yields oxygen plus sugar. ...