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Arecibo Radio Telescope
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Puerto Rico is often referred to as ''Borinquen'' or ''Borikén'', indigenous names, as well as ''Isla del Encanto'' (Island of Enchantment) and ''Perla del Caribe'' (Pearl of the Caribbean). Puerto Ricans speak Spanish and refer to themselves as ''Puertorriqueños'' or ''Boricuas''. Boricua is used as a term of endearment and cultural affirmation.  
 
Puerto Rico is often referred to as ''Borinquen'' or ''Borikén'', indigenous names, as well as ''Isla del Encanto'' (Island of Enchantment) and ''Perla del Caribe'' (Pearl of the Caribbean). Puerto Ricans speak Spanish and refer to themselves as ''Puertorriqueños'' or ''Boricuas''. Boricua is used as a term of endearment and cultural affirmation.  
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==Giant Radio Telescope==
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The Arecibo Radio Telescope, which is located at Arecibo, Puerto Rico, is the largest dish antenna in the world.  It spans 1,000 feet across. It redirects and focuses radio waves heard from the sky into a feed antenna that is suspended above it on cables. The dish itself is immobile, constructed into a bowl in the landscape.  The telescope is directed at various changing parts of the sky by shifting the dome (feed antenna) on its metal track, which is curved.<ref>https://www.inverse.com/article/15804-how-do-we-talk-to-aliens-scientists-meet-in-puerto-rico-to-hash-it-out</ref>
    
==First Contact==
 
==First Contact==
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