Determined to rescue Seven, Janeway leads an away team in the Delta Flyer to find the Borg sphere that took Seven away.
Borg spheres were also seen in several episodes of 'Star Trek: Voyager'.
The Borg sphere generates and enters a temporal vortex, and Picard orders the Enterprise to follow.
Meanwhile, Voyager, aided by a Borg sphere crewed by liberated drones, manages to rescue the away team.
This same year, a Borg sphere pursued the USS Voyager to Earth through a transwarp conduit and was subsequently destroyed.
Correctly deducing that it has been opened by Voyager, he witnesses the battle that follows with the Borg sphere and Voyagers dramatic return to the Alpha Quadrant.
A Borg sphere was hurtling toward the tiny craft.
She leaves behind a large Borg sphere and three mysterious orbs.
Debris from the Borg sphere destroyed by the Enterprise had been scattered into space.
Four of the USS Enterprise-E's quantum torpedoes destroyed an unshielded Borg sphere.