Astronomers have sent a message to an Earth like planet that may contain life. We may expect a reply in less than 25 years if someone gets our message. The destination star is GJ 273, also known as Luyten’s star, a red dwarf in the northern constellation of Canis Minor, about 12 light years away.
The signal was transmitted from an antenna in Norway over a three day period in October. The message contains the information about counting, arithmetic, geometry, trigonometry and includes a description of the radio waves that carry the message.
It also has “Thirty three pieces of music, each 10 seconds long. Project GJ 273b initiative is a team effort led by the Sónar Music Festival along wit METI (Messaging to Extra-Terrestrial Intelligence) and International and the Institute of Space Studies of Catalonia in Spain.