Hopscotching with Aliens?

There is a new initiative in the area of the Search for Extra-Terrestrial Intelligence (SETI). Although the SETI program has history of listening for deliberate (or accidental) messages from any potential advanced civilizations dating back more than 50 years now, 99% of the time we listen for messages. Only rarely do we knowingly transmit them. Indeed some long wavelength transmissions such as TV programs do manage to leak into space, but they are too faint to decipher across interstellar distances. In all that time we have never received a message from aliens or even a hint that aliens exist. There is also no evidence at all that aliens have ever visited us. Space appears to be empty. Does this mean other intelligent creatures do not exist at all? This question has motivated a new initiative called the Messaging Extra Terrestrial Intelligence (METI). The aim is to take action to send messages in the direction of nearby known planetary systems. Most … Continue reading →

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