New message Arecibo updates original attempt to contact ET



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All this was packaged and on November 16, 1974, directed to the star cluster M13. As interesting as the experiment was, the project was not exactly a serious attempt to make contact. After all, the M13 is 25,000 light-years away – meaning that any potential response would not reach for at least 50,000 years – and when the signal arrives, the cluster may not even be in the right position anymore.

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