How do cosmic rays attain their incredibly energies, up to 1020 eV? This is one of the great astrophysical mysteries of our time. Neutron stars in the form of pulsars and magnetars are thought to be possible acceleration sites for these particles but no known acceleration mechanism can still account for the highest energy levels. The aim of this study is to give a short review of the state of cosmic ray research, propose varioust constraints to the cosmic rays and their acceleration and then with respect to these constraints suggest an alternate mechanism based on unipolar induction within preon stars. Preon stars are theoretical objects with properties similar to neutron stars and would therefore be a good candidate for cosmic ray acceleration.