Star Wars Young Jedi Knights

Star Wars Young Jedi Knights is a series of young adult novels set in the Star Wars universe. The series follows the adventures of Jacen and Jaina Solo, the twin children of Han Solo and Leia Organa, as they attend the Jedi Praxeum on Yavin 4 and train under their uncle Luke Skywalker.
The series includes the following books:
Heirs of the Force: Jacen and Jaina are sent on a mission to retrieve a powerful artifact from the planet of Ossus.
Shadow Academy: The twins and their friends discover a dark plot by the Shadow Academy to infiltrate the Jedi Praxeum.
The Lost Ones: Jacen and Jaina investigate the disappearance of a group of students on a dangerous planet.
Lightsabers: The twins and their friends discover a group of pirates who are stealing lightsabers from Jedi across the galaxy.
Darkest Knight: The twins and their friends are forced to face the dark side when they encounter a Sith Lord who wants to turn them to the dark side.
Jedi Under Siege: The Jedi Praxeum is attacked by an unknown enemy, and the twins and their friends must defend it.
Shards of Alderaan: The twins and their friends discover a plot by the remnants of the Empire to rebuild the planet-destroying weapon known as the Death Star.
Diversity Alliance: The twins and their friends uncover a plot by a group of aliens to take over the galaxy.
Delusions of Grandeur: The twins and their friends are sent on a mission to a planet where a mad scientist is experimenting with dangerous technology.
Jedi Bounty: The twins and their friends go on a mission to rescue a kidnapped friend and find themselves pursued by bounty hunters.
The Emperor's Plague: The twins and their friends must find a cure for a deadly disease that threatens the galaxy.
Return to Ord Mantell: The twins and their friends return to the planet of Ord Mantell, where they uncover a plot to overthrow the government.
Trouble on Cloud City: The twins and their friends travel to Cloud City to investigate a series of thefts and discover a conspiracy to take over the city.
Crisis at Crystal Reef: The twins and their friends go on a mission to investigate a strange phenomenon on the planet of Belkadan.
Throughout the series, the twins and their friends learn important lessons about the Force, friendship, and the responsibilities of being a Jedi.