China will permit foreign astronomers to use its 1,600-foot radio telescope for the first time this summer. The Five-hundred meter Aperture Spherical radio Telescope (FAST) is the world's largest single-disc radio observatory, used for spotting cosmic phenomena and searching for extraterrestrial life. It's one of the only 'Sky Eyes' remaining after the decommissioning and collapse of Arecibo Observatory's 1,000-foot radio telescope in December. Scientists from China and abroad can submit ...