In 2100 OTT, United Earth began the Greater Solar System Survey Project. The goal was to identify, categorize and determine uses for every bit of celestial real estate in Terra's solar system.

This project ran from 2100 to the formation of the Union in 2222 OTT. It consisted of over 125 missions, each one to three years in length. At the end of the project, it had surveyed circa one million objects, (although most were very briefly checked). The project would be resumed in 2292 as part of the Map the Galaxy Act of 2290

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