Hosnian Prime Hosnian Prime was a planet in the Hosnian system of the Core Worlds , located along the Corellian Trade Spine . Thirty years after the Battle of Endor , it served as the headquarters of the Galactic Senate and capital of the New Republic during the conflict between the Resistance and the First Order . In 34 ABY , seeking to rid the galaxy of what it saw as the illegitimate Republic government , the First Order used its superweapon , Starkiller Base , to destroy Hosnian Prime and all other planetary bodies in the system . The superweapon caused the ignition of Hosnian Prime ' s core , transforming the planet into a star in a pocket nova . Description . Hosnian Prime was a cosmopolitan planet located on the edge of the galaxy ' s Core Worlds . Some cities on the planet included the capital Republic City and Darropolis . Besides the New Republic senatorial complex , other locations on Hosnian Prime included the hanging gardens and the offices of the " Galaxy Beacon " . History . Age of the Empire . During the reign of the Galactic Empire , Plas Lelkot , the surgeon consul of Hosnian Prime , hid refugee s in his own chateau . Due to his support for the Rebel Alliance , he was imprisoned at the bleak Ashmead ' s Lock prison on the planet Kashyyyk . Around 3 BBY , Han Solo and Chewbacca went on a stakeout at Freerago ' s Satellite Diner and Motel , a satellite diner and motel in orbit of Hosnian Prime that was frequented by many different species , as well as Imperials . It was where many went to consort and mingle . Galactic Civil War . In 5 ABY , the Rebel Alliance ' s successor government New Republic operated a veteran hospital in Darropolis . There , the New Republic soldier Dade Hetkins received treatment and a cybernetic leg to replace the one lost following the Battle of Endor . Doctor Arsad supervised Hetkins ' recovery , and assigned him the prototype therapy droid QT - 9 . Around the time of the Battle of Jakku , Yuprin Arlo represented Hosnian Prime in the New Republic ' s Galactic Senate . Another Hosnian Prime native , Sondiv Sella , served as a councilman in the Galactic Senate . New Republic era . By 28 ABY , Hosnian Prime had been voted the capital of the New Republic , and hosted individuals from many species including human s , Wookiee s , and Gungan s . By that stage , two major factions had emerged in the Senate : the Populists , who wanted worlds to maintain considerable autonomy ; and the Centrists , who favored a stronger central government . That year , the senatorial complex was damaged during the Napkin Bombing . The bomb had been planted by Arliz Hadrassian , a former Imperial TIE fighter pilot and Imperial Security Bureau officer who had become the leader of the Amaxine warriors , a militia that served as a front for the First Order , a remnant of the Old Empire . It was on Hosnian Prime that Populist Senator Leia Organa ' s true parent age as the daughter of Darth Vader was revealed . This information was publicly disclosed by her Centrist friend senator Ransolm Casterfo , who had been manipulated by Lady Carise Sindian , a secret agent of the First Order . The Populist Senator Tai - Lin Garr was later assassinated by Hadrassian while campaigning as First Senator in one of Hosnian Prime ' s parks . Sindian later framed Casterfo for the crime after he supported Organa ' s report about the existence of threats to the New Republic . Organa subsequently announced her intention to resign from the Senate and founded the Resistance , a private military force dedicated to protecting the Republic . In 34 ABY , the First Order , believing the Republic to be an illegitimate government incapable of maintaining order in the galaxy , targeted the Republic - controlled Hosnian system with a superweapon known as Starkiller Base in an effort to destroy them . The Starkiller turned its sights towards Hosnian Prime and incinerated them with a beam of phantom energy . Chancellor Lanever Villecham , Resistance commander Korr Sella , countless senators , and all the inhabitants of the Hosnian system were victims in the destruction of the system . In the resulting pocket nova , Hosnian Prime became a second star in its system . The destruction of the Hosnian system was visible from across the galaxy , due to the vast quantities of energy released from Starkiller Base creating a temporary rip in sub - hyperspace . Inhabitants . Hosnian Prime ' s inhabitants celebrated Equinox Day , a holiday unique to the planet commemorating the beginning of autumn . Behind the scenes . Hosnian Prime briefly appeared in the 2015 film . Information about the planet and its status within the New Republic was elaborated upon in the reference book " " .