Album: Pictures of the Day,
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A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership.
They can either be tagged as POTD or displayed in a special page on that site...
Album: Earth & Universe,
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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. "Heavenly Eye" or "The Eye of Heaven"), is a radio telescope located in the Dawodang depression (大窝凼洼地), a natural basin in Pingtang County, Guizhou Province, southwest China. It consists of a fixed 500 m (1,600 ft) dish constructed in a natural depression in the landscape...
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