Luke Skywalker was a Force-sensitive human male Jedi Master who was instrumental in defeating the Galactic Empire and the Sith during the Galactic Civil War. He was the son of the redeemed Jedi Knight Anakin Skywalker and Senator Padmé Amidala, the grandson of Shmi Skywalker Lars, the grandson of both Ruwee Naberrie and Jobal Naberrie, the step-nephew of Owen and Beru Lars, the twin brother of Leia Organa and the uncle of Ben Solo. Skywalker and his sister were born in 19 BBY on the asteroid Polis Massa, unbeknownst to their father, the recently christened Sith Lord Darth Vader. After his mother died in labor, Skywalker was separated from his sister and taken by Jedi Master Obi-Wan Kenobi to the planet Tatooine to be raised by the Lars family, out of sight of the Galactic Empire. Luke grew up unaware of his origins, but his life changed forever with his uncle's purchase of two droids—R2-D2 and C-3PO—carrying plans to the Imperial Death Star superweapon. After his aunt and uncle were killed by Imperial troops searching for the plans, Skywalker embarked on a journey to deliver the plans to the Rebel Alliance, receiving training in the ways of the Force from Kenobi, and meeting Han Solo and (unbeknownst to him) his sister, Princess Leia Organa, a member of the Rebellion. Though Kenobi was killed by Vader, Skywalker participated in the Battle of Yavin alongside the Rebels with guidance from Kenobi's spirit, and managed to destroy the Death Star.