Phonograph Records in Space

The Golden Record Cover

          Have you ever wondered if someone from space, perhaps extraterrestrials, intercepted one of our space probes? Can we somehow leave a message in that space probe in case an extraterrestrial will intercept it (if they ever exist)? The answer is yes.

          In fact, NASA already did it. They placed the message to both Voyager 1 and 2. The message is said to be carried by a phonograph record. The phonograph record is a 12-inch gold plated copper disk. It contains sounds and images that show the life on this planets. The contents of the record are carefully selected by a committee chaired by Carl Sagan of Cornell University. 

          As of this moment, Voyager 1 and 2, together with the record,  are already in space and are about to reach interstellar space. 

You can read more about the golden record and Voyager 1 and 2 if you click the link below.

Source: http://voyager.jpl.nasa.gov/spacecraft/goldenrec.html