NASA has uploaded audio from the Voyager program's golden records to SoundCloud, allowing listeners to hear what may potentially be our first contact with an alien race. The agency has made available two playlists, known as Greetings to the Universe and Sounds of Earth.
Voyager 1 is currently mankind's most distant emissary, carrying with it a time capsule containing a message designed to convey an essence of Earth to any extraterrestrial intelligence that might happen upon the relic in the distant future.
In pursuit of this aim, Voyager 1 & 2 carry 12-inch gold-plated copper disks containing 115 images and an eclectic selection of music and natural sounds. The record covers feature diagrams instructing the discoverer of the capsule how to listen to the message and unlock the images encoded on the record.
The sounds and images used to represent Earth and her people were selected by Carl Sagan and a committee from Cornell University. The newly uploaded Greetings to the Universe playlist contains 55 welcome messages spoken in a diverse range of tongues, from Akkadian, a now-dead language formerly spoken in ancient Mesopotamia, to Wu, a relatively modern dialect of the Chinese language.
The sounds from Earth playlist features 19 tracks of animal calls and man-made noises, such as Morse code and footsteps. It is worth noting that NASA has yet to upload the music selected by Sagan & Co to represent Earth's culture, a list of which is available on the NASA Voyager website.
Voyager 1 has already made its way into interstellar space, making it the most distant manifestation of humanity. Voyager 2 meanwhile is currently 107 AU from Earth, moving through the outer layer of the heliosphere, the heliosheath.
A link to the playlists can be found in the source link.