Message that Voyager Carries

This picture shows a message from the humankind to the outerspace. This is a 12-inch gold plated copper disk (a phonograph record) containing recorded sounds and images representing human cultures and life on Earth. It is affixed to both Voyager 1 and 2 spacecrafts, which are now respectively 15 and 12.5 billion kilometers from the Sun, equivalent to about 14 and 11.5 light-hours distant.

Launched thirty years ago, NASA's Voyager 1 and 2 spacecrafts are still functioning, and are being tracked and commanded through the Deep Space Network. Having traveled beyond the outer planets, they are only the third and fourth spacecraft from planet Earth to escape toward interstellar space, following in the footsteps of Pioneer 10 and 11.

The recorded material was selected by a committee chaired by astronomer Carl Sagan. Simple diagrams on the cover symbolically represent the spacecraft's origin and give instructions for playing the disk. The exotic construction of the disks should provide them with a long lifetime as they coast through interstellar space. Link