Vice-premier attends launching ceremony of world’s largest radio telescope

Vice-Premier Liu Yandong attends the launching ceremony of the 500-meter Aperture Spherical Telescope (FAST) and reads the congratulatory letter sent by President Xi Jinping in Pingtang county, southwest China’s Guizhou province on Sept 25. The world’s largest radio telescope was officially put into use on Sept 25.[Photo/Xinhua]