Arecibo message beamed toward the M13 star cluster

When
Graphic of the Arecibo message as a grid of colored pixels
The 1,679-bit Arecibo message beamed toward the M13 cluster in 1974, shown as a picture Arne Nordmann ( norro ), CC BY-SA 3.0, via Wikimedia Commons

At a ceremony marking an upgrade of the Arecibo radio telescope in Puerto Rico, scientists beamed a short pictorial radio message toward the globular cluster M13, about 21,000 light-years away. The SETI Institute notes a reply is unlikely ever to come.

Sources

  1. OtherArecibo Message (opens in a new tab)SETI Institute

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