.On Nov 16, 1974, humans sent their 1st message to the celebrities in an attempt to call extraterrestrials. They did this using what was after that the biggest radio telescope in the world, located at the Arecibo Observatory in Puerto Rico. A group of experts led through Frank Drake as well as Carl Sagan sent their information to the M13 galaxy.
The notification was actually written in binary code and consisted of info about human DNA. It likewise featured bodies of a human, the planetary system and also the Arecibo telescope. The concept was actually that if any type of aliens were actually to receive the sign as well as find out how to decode it, they would recognize where it arised from.
Since M13 is 25,000 light-years away, it is going to take 25,000 years for any M13 invaders to hear our notification– if they are actually level there. The Arecibo information is actually just one of many information meant for extraterrestrials. Our team have actually also featured notifications on numerous spacecraft, including Pioneer as well as Voyager.