Five-hundred-meter Aperture Spherical Telescope

Radio telescope in Guizhou, China

The Five-hundred-meter Aperture Spherical Telescope (FAST; Chinese: 五百米口径球面射电望远镜), nicknamed Tianyan (天眼, lit. "Sky's/Heaven's Eye"), is a radio telescope located in the Dawodang depression (大窝凼洼地), a natural basin in Pingtang County, Guizhou, southwestern China. FAST has a 500 m (1,640 ft) diameter dish constructed in a natural depression in the landscape.

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