The Story Of The Golden Record
In 1977, the Humankind, sent two spacecrafts in the cosmos: Voyager 1 and Voyager 2. Each of these spacecrafts carries one phonograph record, and each of these phonographs are covered by another golden disc: The Golden Record Cover.
This cover serves as a protection to the disc but also carries instructions as to how to play the disc as well as well as additional information about our Planet:
A short video contextualizing the Voyager program: