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Gold Artifact To Orbit Earth In Hope of Alien Retrieval
Lucas123 writes "The problem: What do you leave behind that billions of years from now, and without context, would give aliens an some kind of accurate depiction of mankind. The answer: A gold-plated silicon disc with just 100 photos. That's the idea behind The Last Pictures project, which is scheduled to blast off in the next few months from Kazakhstan and orbit the earth for 5 billion years. The photos, etched into the silicon using a bitmap format, were chosen over a five-year process that involved interviews with artists, philosophers, and MIT scientists, who included biologists, physicists, and astronomers. To each, was posed a single question: What photos would you choose to send into outer space? The answer became an eclectic mix of images from pre-historic cave paintings to a photo of a group of people taken by a predator drone."
That's exactly what they did. Sadly unsurprisingly the summary got it wrong. See this picture:
http://creativetime.org/wp-content/uploads/2012/09/Disc_001.jpg
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Mathematical/scientific language
Spoken language is unique, but mathematical language is universal, for a start every alien capable of space flight will know what integers are. Once you've established symbols for numbers, you can match that to elements' atomic numbers, which aliens would also understand. Once you have elements you can start to show chemical structures and so on.
Don't you remember how they did it in [Contact](http://www.imdb.com/title/tt0118884/)?
Voyager's pictures are here:
http://voyager.jpl.nasa.gov/spacecraft/sceneearth.html