child-of-thecosmos:

Carl Sagan recognised that the Voyager mission offered two free tickets to something approaching eternity. He assembled a small team to create a message to any civilisation that might, one day, encounter the derelict spacecraft.

Become an extraterrestrial archaeologist for a few moments. An artefact has been fished out of the interstellar ocean. It was made by beings that lived about a billion years ago. What would you make of them and their world? They sent us their music, greetings in 59 human languages, and one whale language; and a sound essay that includes a Saturn V rocket launch, a mother’s first words to her newborn baby, the brainwaves of a young woman newly fallen in love, and the sound of a pulsar.

– Episode 13: Unafraid of the Dark, Cosmos: A SpaceTime Odyssey

You can listen to the contents of the Voyager Golden Record here.