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This undated handout photo provided by Seth Shostak, SETI Institute, shows the Arecibo radio telescope in Puerto Rico. The world’s largest single antenna, it has a million watt transmitter. Astronomers have their own cosmic version of the single person’s Valentine’s Day dilemma: Do you wait for that interesting person to call you or do you make the call yourself and risk getting shot down. Their version involves E.T. Instead of love, astronomers are looking for life out there in the universe. For decades, astronomers have sat by their telescopes, listened and waited for a call from E.T. only to be left alone. So now some of them want to aim their best radars and lasers out to the sky to say “We’re here, call us” to the closest few thousand worlds. They can bring us all sorts of new technologies and answers to burning questions, some hope. (AP Photo/Seth Shostak, SETI Institute)  **FILE**

This undated handout photo provided by Seth Shostak, SETI Institute, shows the Arecibo radio telescope in Puerto Rico. The world’s largest single antenna, it has a million watt transmitter. Astronomers have their own cosmic version of the single person’s Valentine’s Day dilemma: Do you wait for that interesting person to call you or do you make the call yourself and risk getting shot down. Their version involves E.T. Instead of love, astronomers are looking for life out there in the universe. For decades, astronomers have sat by their telescopes, listened and waited for a call from E.T. only to be left alone. So now some of them want to aim their best radars and lasers out to the sky to say “We’re here, call us” to the closest few thousand worlds. They can bring us all sorts of new technologies and answers to burning questions, some hope. (AP Photo/Seth Shostak, SETI Institute) **FILE**

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