The Arecibo Message was a radio signal sent on November 16, 1974 from the Arecibo Observatory in Puerto Rico to be received by any aliens to respond.

The message was in encrypted form and was destined for space. It included some information about humanity and our planet.

The message was prepared by Dr. Frank Drake, a professor of astrophysics at Cornell University in the United States.

No answer has been received yet.

[Source: http://www.sansimera.gr]