In 1977, NASA launched the Voyager space probe that has since left our solar system. In case the probe is ever found by extraterrestrial intelligence, it included a gold record with a message etched onto it. The message shows where Earth is located and a drawing of a man and woman, but also includes an audio recording of sounds from Earth. The probe is over 16 billion km away, and the track below is Earth’s greeting to the universe in 55 different languages. How many can you name?