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September Thursday 29, 2016 at 14:35
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Today's Picture

TheFive-hundred-meter Aperture Spherical Telescope (FAST) isnestled within a natural basin in China's remote andmountainous southwestern Guizhou province.Nicknamed Tianyan, or the Eye of Heaven, the new radio telescope is seen in this photograph taken near the start of its testing phase of operations on September 25.Designed with an active surface for pointing and focusing,its enormous dish antenna is constructed with 4,450 individualtriangular-shaped panels.The 500 meter physical diameter of the dish makes FAST the largest filled, single dish radio telescope on planet Earth .FAST will explorethe Universe at radio frequencies, detectingemission from hydrogen gas in the Milky Way and distant galaxies,finding faint galactic and extragalactic pulsars, and searching for potential radio signals from extraterrestrials .


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