KEO - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/KEO

Its name is supposed to represent the three most frequently used sounds common to the most widely spoken languages today, k, e and o... The satellite has enough capacity to carry a four-page message from each of the more than six billion inhabitants on the planet... KEO will also carry a diamond that encases a drop of human blood chosen at random and samples of air, sea water and earth.[3] The DNA of the human genome will be engraved on one of the faces. .. The messages and library will be encoded in glass-made radiation-resistant DVDs. Symbolic instructions in several formats will show the future finders how to build a DVD reader.

KEO is the name of a proposed space time capsule which will be launched in 2010 or 2011[1] carrying messages from the citizens of present Earth to humanity 50,000 years from now, when it will reenter Earth's atmosphere.