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Scientists have crafted a new message for any intelligent extraterrestrials who might be out there. And they want feedback on whether they should send it. 

The technology needed to send the message is not yet ready. And if and when the note is transmitted, it would take thousands of years for it to reach its destination. In other words, no one expects a return message from ET anytime soon. But the researchers behind the alien memo hope their ideas will open up a dialogue about how to contact aliens and what to say — and how to immortalize humanity as a species. 

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