Ziost / Legends Ziost ( pronounced / ziɒst / ) , sometimes referred to as the " Gateway to the Empire " in the days of the Old Republic , was a world made up of ancient dark forests and barren tundra . However , the trees withered away and the planet became very similar , in landscape , to Korriban . Much of the planet was covered in ice . Not only was it a focal point of the dark side , but it was also the adopted homeworld and Imperial capital of the Sith species , who left their original homeworld , Korriban , as a graveyard world after the death of their leader Adas . Eventually it became a major Sith buffer world during the days of Vitiate ' s Sith Empire before being forgotten entirely . History . A new homeworld . Ziost became the capital of the ancient Sith Empire after the reign of the Sith Overlord Adas came to an end . Without his unifying force holding them together , the Sith degenerated into their previous feudal ways . After centuries of battle and strife , the remaining Sith utilized Rakata n vessels to relocate to other planets , leaving their desolated homeworld Korriban as a vast graveyard world populated by religious fanatics who would , thousands of years later , be subjugated by the Jedi Exiles , forming a new Sith Empire . By the time of the Great Hyperspace War , Ziost remained a key planet within the Empire , but following the Republic ' s victory , it was abandoned , the remaining Sith following the new emperor into hyperspace . A new Sith capital was established on Dromund Kaas , which left Ziost forgotten . At some point during this era , Ziost had also suffered from an Ice Age that had changed the world ' s terrain and climate . The Old Republic . Eventually , the planet was resettled by the new empire , once again becoming a major Sith holding . It served as capital of Imperial buffer space and , eventually , housed the Orbital Defense Command Center , headquarters of the Ministry of Logistics . The city of New Adasta was established on the surface of the planet by Imperial forces to serve as the world ' s capital , quickly overshadowing the Sith Citadel , political center of the Old Empire . The city quickly became a major trade hub , leading to the planet ' s being nicknamed the " Gateway to the Empire . " During Operation End Game , Theron Shan visited the planet , where he infiltrated the Orbital Defense Command Center in New Adasta to steal a Black cipher from Minister Davidge ' s executive office . By the time local officials found out , the agent was already long gone . In spite of the harsh defeat as a result of Shan ' s cunning and local security ' s inability to protect the cipher , the planet remained a key world throughout the duration of the Galactic War . Following the defeat of Revan by combined Republic and Imperial forces on Yavin 4 , the resurrected Sith Emperor attacked Ziost in an attempt to regain control of the empire that he once ruled . He took the minds of legions of Imperial forces on the planet and used them to take the lives of many of the planet ' s citizens to fuel his own power . When the Republic took notice and sent the Sixth Line to Ziost to investigate , Vitiate forced their ship to crash - land on the surface and took the minds of most of the Jedi inside . At the same time , an Imperial task force led by the Minister of Sith Intelligence Lana Beniko arrived and attempted to stop Vitiate . Undeterred , he was able to consume Ziost , resulting in a barren , frozen wasteland which only left a few Monolith s alive . The atmosphere , however , remained breathable . Members of the Republic and the Sith Empire traveled to Ziost once more to gather information on what exactly had taken place . A world lost . Ziost ' s existence was once again forgotten after the Seventh Battle of Ruusan , due to the secrecy of Darth Bane ' s Sith Order . Many ancient and evil secrets remained on this place of great dark power . In 3 BBY , fugitive Jedi Rahm Kota visited Ziost while on the run from the Galactic Empire . The following year , Galen Marek came to the system during his search for Kota . A year after the Battle of Yavin , after being roused on Yavin 4 by the Rebel Alliance , the mutated Massassi Kalgrath came to Ziost hoping to find his people . He was disappointed , having found only a frozen waste . Lumiya visited the planet and created her lightwhip using technology she found on Ziost . Following the Battle of Endor , she apparently trained her apprentices — first Flint and then Carnor Jax — on Ziost or possibly nearby Korriban . Almost a decade later , the Jedi scholar Tionne set out to find Kalgrath . She traced his trail as far as Ziost , but there it disappeared . Another ten years later bounty hunter Zekk , ran into Dengar on the planet while the rival bounty hunters were searching for Bornan Thul . At the time of the Second Galactic Civil War , Jacen Solo ( overseen by Lumiya ) dispatched Ben Skywalker to the world , supposedly to recover a Sith amulet , but in reality to test him against opponents , to see if he was worthy of becoming a Sith apprentice . After having an epiphany of sorts , Ben accompanied the stranded child Kiara Olvidan across the surface of the planet , led by mysterious voices to an ancient temple . Throughout his journey the young Jedi was attacked by neks and pirates orbiting the planet under the command of Byalfin Dyur . Ben escaped the planet eventually , finding an antiquated but extremely powerful Sith Meditation Sphere in the ruined temple , and took the attack to the pirates . Behind the scenes . Ziost versus Korriban ? Though Ziost was established as the original Sith homeworld in " " , many sources described Korriban as the Sith homeworld . It was the " public " capital world of the Sith Empire during the era of Darth Revan , but was a mausoleum - world for millennia beforehand and would return to such a state not long after . The controversy was put to rest in the article " " by Abel G . Peña , which clearly established the Sith originating on Korriban and relocating the capital to Ziost before the arrival of the Dark Jedi exiles during the Hundred - Year Darkness , though the Dark Jedi exiles themselves landed on Korriban . From the article " " : " Without Adas ' unifying influence , wars once again raged for rule of the Sith people , with the reigning combatants arrogantly claiming the title of Sith ' ari , and eventually forcing a relocation of the Sith capitol to the planet Ziost . Eventually , almost two - dozen millennia after Adas ' death , a proper successor to Adas seemed to come at last . Known in Republic space as the Exiles , traitorous Jedi defeated in a galactic war called the Hundred - Year Darkness arrived on Korriban and cowed the Sith people with their astounding Force abilities , lightsabers , and superior technology . " Other appearances . In the MMORPG " " , General Threnoldt mentions Rakata Inscriptions in a place called the Ziost Abyss , suggesting that the Rakata may have once had a major presence on Ziost . These inscriptions , discovered and translated by the Imperial Reclamation Service , are said to describe a Rakatan prisoner on Belsavis called The Infernal One . In another instance , when playing Empire on Tatooine one can hear Imperial Reclamation Service member Hael Phirce remembering his experience during an expedition on Ziost where he was buried alive . Also , one of the capital ships on the imperial fleet is called The Ziost Shadow . Part of the 2012 Drew Karpyshyn novel " " also takes place on the planet . Ziost appears in Game Update 3 . 2 of " The Old Republic " , which was released on April 28th 2015 .