Borg sphere 634
The sphere was sent to intercept the U.S.S. Voyager, in a Transwarp Hub corridor, and attempted to destroy the starship while the hub collapsed. But then the sphere "swallowed" Voyager, and emerged in the Alpha Quadrant -- less than a light-year away from Earth.
The sphere was destroyed from within by a transphasic torpedo. Voyager emerged intact from the sphere's debris to greet an armada of Federation ships, eager to welcome Voyager and her crew home.