Observational physics of mirror world.

The existence of mirror, or shadow, particles is necessary in physics for the restoration of the symmetry of right and left system coordinates. These particles have only gravitational, or perhaps, superweak, interactions with ordinary matter and their own mirror interactions. Study of these interactions is possible only in astronomical observations. A quantitative analysis is conducted of the wide range of effects which the gravitational influence of mirror objects has on ordinary matter. A broad program of search for astronomical effects of mirror matter is proposed which would be conducted on a stellar to galaxy supercluster scale.