Tau Ceti system

The Tau Ceti system is a planetary system 11.9 light-years from Earth. Like Sol, Tau Ceti is a yellow-orange dwarf. This system was inhabited by a significant Covenant presence in 2552, including a massive fleet of warships prepared to attack Earth and the refit and repair station Unyeilding Hierophant. The station was destroyed by UNSC forces September 13, 2552, including the majority of the Covenant fleet.

Tau Ceti is notably also the setting for the game Marathon.