In the middle of the 1970’s, Carl Sagan and his peer colleagues transmitted a broadcast known as the Arecibo message into outer space using radio waves. The 1974 landmark was a special ceremony to commemorate the remodeling of a radio telescope in Puerto Rico known as the Arecibo.
This transmission was the most powerful broadcast of energy ever beamed out into space.
The blast of energy was directed toward a star cluster that is located an estimated 25 ... Read even more
