Apparently the huge Star Wars R2-D2 robot should not only repair those X-wing spacecrafts, but also monitor the activities of the Galactic Empire and Darth Vader.
Well, in fact, it’s a R2-D2 costume designed for the Goodsell Observatory in Carleton College, which is created by an unknown group of enterprising students. Additionally, the big R2-D2 features sound effects that remind you to take a picture with it.
Here is another campus R2-D2 from MIT.
Star Wars R2-D2 Observatory from Carleton College Source