Caption: A Borg sphere breaches the Cube
Caption: The Borg sphere targets Bozeman, Montana
Caption: The Borg sphere heads towards a nebula
In 2373, Picard and the crew of the Enterprise-E followed a Borg sphere back in time, to 21st-Century Earth, in order to prevent the Borg from stopping the first warp test-flight. The Enterprise destroyed the sphere, but not before its Borg crew beamed over to Enterprise.