  We consider the hypothesis that some active galactic nuclei and other compact
astrophysical objects may be current or former entrances to wormholes. A broad
mass spectrum for astrophysical wormholes is possible. We consider various new
models of the static wormholes including wormholes maintained mainly by an
electromagnetic field. We also discuss observational effects of a single
entrance to wormhole and a model for a binary astrophysical system formed by
the entrances of wormholes with magnetic fields and consider its possible
manifestation.
