KEO
KEO is the name of a proposed space time capsule which was to have been launched in 2003 carrying messages from the citizens of present Earth to humanity 50,000 years from now, when it would re-enter Earth's atmosphere. It was later delayed to 2006, then to 2007/2008, then to 2010/2011, then to 2012, and is currently estimated to launch in 2014.
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