Message Into Space: Aliens Can Expect Human Mail In Dozens Of Years

If there are any intelligent extraterrestrials in the universe, they will be getting a message from humans years from now. Head of the organization that has sent a transmission to an exoplanet told Russian magazine Sputnik aliens that are capable of making their way to Earth, know humans exist already.
Scientists at the organization Messaging Extra Terrestrial Intelligence (METI) International in the United States have beamed messages into outer space hoping to make contact with extraterrestrial civilizations, with the expectation that a reply will not come for at least another quarter of a century.
The encoded message was sent by via ‘sonar calling,’ using pulses from a radio telescope, in the direction of the possibly habitable exo-planet GJ273b and also contained music by 33 artists.
METI International is distinct from the more well-known Search for Extra-Terrestrial Intelligence (SETI) Institute in that it is actively trying to establish communication with alien civilizations, while SETI limits itself to finding evidence of their existence.
