The Arecibo Message
https://docs.google.com/presentation/d/1v6VaF_3-2FB3PxCZNDN7PH9hZjFqTcvwKWVYIC3Hu_Y/edit?usp=sharing
In 1974, an interstellar radio message was sent from Puerto Rico to globular star cluster M13 in attempts to contact alien life. The message contained 1,679 binary digits which were represented by a shift in frequency at 10 bits per second, in total the transmission lasted three minutes.
In 1974, an interstellar radio message was sent from Puerto Rico to globular star cluster M13 in attempts to contact alien life. The message contained 1,679 binary digits which were represented by a shift in frequency at 10 bits per second, in total the transmission lasted three minutes.