Fifty years after Frank Drake and Carl Sagan encoded 1,679 bits in a 73-by-23 grid to depict numbers, DNA, a human, and our solar system for a message toward Messier 13, the Last Arecibo Message renews interstellar outreac… #aliens #arecibo #mayaguez #nationalgeographic #ovni #uap #ufo #ufosky #usa https://www.nationalgeographic.com/science/article/arecibo-message-alien-extraterrestrial-communication