The Fast or Five-hundred meter spherical radio telescope is a radio telescope located in Guizhou Province, southwest China. It consists of a fixed plate 500 meters in diameter built in a natural depression in the landscape. It is the world's largest full-aperture radio telescope, and the second largest single-plate opening. It has a new design, using an active surface made of metal panels that can be tilted by a computer to help shift the focus to different areas of the sky.
