Astronomers relieved as U.S. funding agency moves to keep Arecibo telescope operating

November 21, 2017

The 54-year-old observatory, with a fixed dish built into a depression in the karst hills of western Puerto Rico, is the largest single-dish radio telescope in the world—at least until a larger rival in China becomes fully operational. It is used for a range of sciences, including radio astronomy in deep space and radar studies of planets, asteroids and Earth’s atmosphere.