Poul Anderson 
Harvest of Stars 
Harvest of Stars Book 1

Earth lies crushed in the grip of totalitarianism. To save her planet, Kyra Davis is sent on a mission to liberate the last bastion of freedom and to rescue its legendary leader. Her bold adventure will sweep her from Earth’s rebel enclaves, to the decadent court of an exotic lunar colony, from the virtual realities of biotech and artificial intelligence to a brave new world menaced by a dying star.