 Meanwhile , Enterprise approaches the sphere , but has to halt its approach due to damage from the spatial anomalies generated by it . The ship sends down a shuttlepod coated with <unk> @-@ D ( retrieved in " Impulse " ) , and is able to approach close enough to take readings . Archer and Trip return to Enterprise and set course to retrieve Sato . Meanwhile , Tarquin attempts to trick her into staying with him permanently , but she refuses and threatens to destroy a device which enhances his telepathic abilities . He reluctantly agrees to let her go , and later provides Enterprise with the co @-@ ordinates for the Xindi colony that is building a part of the weapon . The episode ends as T 'Pol calculates that there are approximately 50 spheres in the expanse region . 
