Pioneer Plaque

Pioneer Plaque

The contents of the record were selected for NASA by a committee chaired by Carl Sagan of Cornell University. Dr. Sagan and his associates assembled 115 images and a variety of natural sounds, such as those made by surf, wind, and thunder, and animal sounds, including the songs of birds and whales. To this they added musical selections from different cultures and eras, and spoken greetings from Earthlings in fifty-five languages, and printed messages from President Jimmy Carter and U.N. Secretary-General Kurt Waldheim.

After NASA had received criticism over the nudity on the Pioneer plaque (line drawings of a naked man and woman), the agency chose not to allow Sagan and his colleagues to include a photograph of a nude man and a nude, pregnant woman on the record. Instead, only a silhouette of the couple was included.

Here is an excerpt of President Carter's official statement placed on the Voyager spacecraft for its trip outside our solar system, June 16, 1977:

"We cast this message into the cosmos… Of the 200 billion stars in the Milky Way galaxy, some — perhaps many — may have inhabited planets and space faring civilizations. If one such civilization intercepts Voyager and can understand these recorded contents, here is our message: We are trying to survive our time so we may live into yours. We hope some day, having solved the problems we face, to join a community of Galactic Civilizations. This record represents our hope and our determination and our goodwill in a vast and awesome universe."

The 115 images are encoded in analogue form. The remainder of the record is audio, designed to be played at 16⅔ revolutions per minute. It contains spoken greetings beginning with Akkadian, which was spoken in Sumer about six thousand years ago, and ending with Wu, a spoken Chinese dialect.