This is the third book on the Cambridge Annex trilogy.With the UK voting for the Outer-Space Treaty and public opinion turning against them, the space-farers know they have no choice but to abandon their aspirations of having a university in orbit about the earth. They just haven't got the means of manufacturing everything they need. They are too reliant upon earth industry to enable them to break away.And yet, they cannot give earth the secret to the chemical that provides them with their propulsion. To do so would be to change so much of the infrastructure of global economies as to cause collapse. That's without the implications fast and cheap travel would provide to the military.With little option, the space-farers abandon the large ship they had come to call home, and move out of orbit in a smaller craft, leaving earth behind them. They have this silly idea about moving asteroids and using them as bargaining chips with earth.When earth sees what is coming their way, bargaining is the last thing they're going to do.
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