世界上最大的全口径，最灵敏的射电望远镜-中国的五百米孔径球面射电望远镜（FAST）已于周三正式向世界开放。
China’s Five-hundred-meter Aperture Spherical Radio Telescope (FAST), the world’s largest filled-aperture and most sensitive radio telescope, has officially opened to the world starting Wednesday.