Signal

Rows of prayer candles blink in binary a portion of the Arecibo message. The portion of the message blinked by the candles is the encoded formulas for the sugars and bases in the nucleotides of DNA. The message was originally broadcast into space via frequency-modulated radio waves from the Arecibo radio telescope in Puerto Rico in 1974. The interstellar radio message carried human DNA information as well as basic information about humanity and Earth and was sent to globular star cluster M13 in the hope that extraterrestrial intelligence might receive and decipher it.