Messages to E.T.

There have been a few attempts to actively communicate with extra-terrestrials. These have been mainly through the tranmission, via a radio telescope, of streams of radio "pulses" in which each pulse is meant to represent a "bit" (a one or a zero); an actual pulse representing a "1" and a period of silence (or lack of a pulse) indicating a "0".

In this manner, information can be encoded in the most simple and universal binary language, with the hope that an intelligence that observes such a transmission will be able to decode and understand the message.

Various types of information have been encoded in this manner and trasmitted in the direction of various Sun-like stars or star clusters that may potentially nuture life-forms similar to our own.
Such messages include:

• The Arecibo Message
• The Evpatoria Message
• The TAM

Details of each of these examples follow in the menu to the left.