Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. The Arecibo radio telescope is currently the largest single-dish telescope in the world. The Arecibo telescope has been used for many astronomical research projects , including searches and studies of pulsars , and mapping atomic and molecular gas in the Galaxy and the universe . As the Arecibo dish can also be used to send radio waves, it has bounced and recorded radiation off of planets in our Solar System , and has even broadcast messages to areas of the Galaxy that might contain intelligent extra-terrestrial life . Any person in the world may use the telescope, providing their proposal is selected by a review committee.
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