How do you play a record if nobody has ever shown you a record player?

In 1977, NASA sent a gold-plated record aboard each Voyager spacecraft.

They carried pictures, music, and greetings in fifty-five languages.

The cover shows where to put the needle and which way it should travel.

A measurement based on hydrogen tells the finder how fast to turn it.

The first encoded picture is a circle. If it looks oval, adjust the image.

The challenge was sending a message, and sending the instructions to read it.