Doubly-Symmetric Periodic Solutions of the Spatial Restricted Three-Body Problem

The existence of two new families of periodic solutions to the spatial restricted three-body problem is shown. These solutions are independent of the mass ratio of the primaries, have large inclinations and are symmetric with respect to two coordinate planes. In one family the infinitesimal particle is very far from the primaries and in the other family the infinitesimal is very close to one of the primaries.