The Enterprise-E arrived at the battle, in violation
of orders, as the Borg entered orbit. Captain Picard was able to use his
knowledge of the borg to locate a weak point on the hull, and by concentrating
the firepower of the few remaining ships on that spot the cube was successfully
destroyed. However, the Borg launched a spherical escape pod of some kind
as the cube was destroyed, and this ship generated a temporal vortex in
order to go into the past and assimilate Earth there. The sphere attacked
the launch site of Zephram Cochranes warp ship, damaging the vessel and
killing many of the support staff. They hoped that this would prevent First
Contact between the Humans and Vulcans, thus preventing the creation of
the Federation. The Enterprise followed the sphere through the vortex and
destroyed it, although a group of Borg transported to the Battlecruiser
and almost assimilated the ship. Eventually the Enterprise crew where successful
in both overcoming this attack and correcting the damage done to the past.