sentences:  The Russian Federal Space Agency (Roscosmos) has planned a fully robotic lunar base called Lunny Poligon.The project was planned for 2020, with an expected completion date of 2037.In the words of former NASA Administrator, Michael D. Griffin,
  
  A station in lunar orbit can serve as a communications hub, temporary habitation module, and holding area for rovers and other robots intended for an outpost on lunar ground.