Death Star
Death Star I
Production information

Imperial Department of Military Research[1]


Death Star I


Deep-space mobile battlestation[1]

Technical specifications

160 kilometers[1]


160 kilometers[1]


160 kilometers[1]


10 MGLT[2]

Engine unit(s)

Sepma 30-5 sublight engines (2)[1]

Hyperdrive rating

Class 4.0[2]

Hyperdrive system

Isu-Sim SSP06 hyperdrive generators (123)[1]

Power plant

Sienar Fleet Systems SFS-CR27200 hypermatter reactor[1]

  • Full-time crew members (342,953)[1]
  • Officers (27,048)[2]
  • Troops (607,360)
  • Pilots (167,216)
  • Support and maintenance crew (285,675)[1]
  • Support droids (400,000)
  • Stormtrooper (25,984; depending upon deployment)[2]
  • Gunners (57,278)[1]
  • Starship support staff (42,782)
  • Passengers (843,342)[1]

Galactic Empire

Earliest sighting

19 BBY



Present for battles/events
Known crewmembers

Moradmin Bast

Known commander(s)
Points of interest

Emperor's throne room

This station is now the ultimate power in the universe. I suggest we use it.

Admiral Motti, Star Wars Episode IV: A New Hope

The Death Star I was a massive Imperial battlestation/superweapon with a diameter of 160 kilometers designed to enforce law and order throughout the Empire with the threat of planetary destruction.

It started off as the Separatist Ultimate Weapon before becoming the Expeditionary Battle Planetoid Development Initiative after it ceased to be a Separatist project and became an Imperial one in 19 BBY.


Look at the size of that thing!

Wedge Antilles, Star Wars Episode IV: A New Hope

Schematics of the first Death Star.

The basic structure of the station was a sphere the size of a small moon, with a kilometer-wide trench containing docking bays running around its equator. It was the very incarnation of the Tarkin Doctrine.

The original superstructure planned for the station was 120km in diameter. The 160km diameter of the final design represented a mark II revision of the superstructure. At the time of its making, it was believed that no Death Star battlestation would ever need to be bigger than 500km in diameter. However, some experts believed the concept would necessitate a 900km diameter and the designers of the second Death Star ended up following their advice.

The first Death Star, like its successor, was divided into two hemispheres, each subdivided into 12 bridge-controlled zones. The northern hemisphere held the main armament of the station, a fearsome superlaser. This weapon had the external appearance of a bowl several kilometers wide. When activated, eight separate beams were fired through the Particle accelerator tubes, amplified through rings, and conjoined to form one of eight separate beams that would focus outside the dish, focusing into a point to form a single incredibly powerful superlaser beam. The power settings of the superlasr were adjustable, allowing for the destruction of naval vessels and planets alike. Blasts with the power to destroy naval vessels could be fired roughly once every minute, while planet-destroying blasts could only be fired once per day.[5] This superlaser was powerful enough to destroy even a shielded planet with one shot.

The Death Star was said to comprise eighty-four separate internal levels, stacked south to north. Each level was separated into 257 sub-levels. A nominal number of sub levels were then to be stacked around the surface of the sphere, encompassing the inner stacked levels.


The Death Star's superlaser fires on Alderaan.

Facilities included parks, shops, and other amenities for the Human crew, as well as numerous maintenance necessities such as trash compactors, like Garbage Compactor 3263827. The entire hull of the planetoid was covered in quadanium steel.

The battlestation also included two massive sublight engines in the midsection, as well as a formidable hyperdrive system. Driven by 123 individual generators tied to one navigational matrix[5] , the Class 4 hyperdrive was fast enough to allow the Death Star to travel thousands of light years from Alderaan to Yavin IV in only a few hours. All engineers working near the highly radioactive engines were forced to wear radiation suits in order to keep harmful exposure to a minimum.[5]

Near the northern pole, a hundred meter tower was constructed and shielded to near impenetrability for the Emperor to use as personal quarters while on board. Operational command of the space station took place from the overbridge, which included the conference room.

At any given time, around 1.7 million Imperial personnel (excluding droids) were aboard the battlestation.

According to some sources, the space station actually possessed another 5,000 turbolaser batteries, for a total of 15,000. It is possible that this statistic was merely an attempt to discourage possible attacks.


Separatist beginningsEdit

«The Jedi must not find our designs for the Ultimate Weapon. If they find out what we are planning to build, we're doomed.»
Archduke Poggle the Lesser, in Geonosian, to Count Dooku[src]
The Ultimate Weapon

The plans for the Ultimate Weapon given to Count Dooku during the Battle of Geonosis.

The initial technical design of the Death Star, known at the time as the Ultimate Weapon, was created by Geonosian Industries and called for a spherical-like battle station capable of destroying Galactic Republic forces and planets under their control.

Poggle the Lesser, leader of the Geonosians, returned the top-secret design to Count Dooku to prevent it from falling into the hands of the Jedi during the Battle of Geonosis. Dooku took the designs back to Coruscant and gave them to Darth Sidious, his dark master.[6] These plans would later be fused with Wilhuff Tarkin and Raith Sienar's vision of an Expeditionary Battle Planetoid.[7]

In 21 BBY, early in the Clone Wars, Sidious ordered Geonosian builders to begin construction on the station. Hundreds of thousands of workers were busy building the station throughout the war.[8] Around five months after the Battle of Geonosis, Dooku briefly considered halting production of the Weapon in favor of the Planet Killer, but changed his mind after the demonstration failed, thanks to sabotage by Mace Windu.[9] In 20 BBY, 17 months after the start of the war, Geonosian technicians on Zaadja were observed working on the Weapon's design.[10]

In 19 BBY, Supreme Chancellor Palpatine sent the 501st Legion on a mission to Mygeeto where they were to collect an energy sample that would be used in the station's superlaser.[11] During the last few weeks of the war, the Separatist Council debated on ways to prolong the war, to allow their secret weapon time to be finished.[12]

Imperial constructionEdit

Construction of the Death Star

Emperor Palpatine and Darth Vader witness the construction of the first Death Star.

I guess this explains what the Empire wants with all those Wookiee slaves, droids alone couldn’t build that monster. Not in a thousand years. Nor could the scum you’d usually find in an Imperial prison.

Galen Marek upon seeing the Death Star for the first time, Star Wars: The Force Unleashed (novel)

Following the death of the Separatist Council and the end of the Wars, Separatist holdings were turned over to the newly established Galactic Empire, including the unfinished battlestation. Construction was renewed under Imperial supervision in order to secure Palpatine's newly-formed absolute power.[13] Wilhuff Tarkin was appointed to mastermind the secret development project. Tarkin's creative work and thought had resulted in the realization of the Death Star as the Empire's ultimate weapon.

To help build the superweapon and curry the Emperor's favor, Tarkin had Darth Vader lead an Imperial invasion of Kashyyyk, where they enslaved Wookiees for labor.[14] These Wookiees would later be transported to Despayre, the Death Star's construction site. Much of the needed funding came from appropriated funds originally earmarked for the Department of System Exploration and the Department of Public Works.

However, the project nearly ended before it began. Although much of the technology of the Death Star was impressive, actually building it proved to be more difficult than anyone imagined. The project was dragged out over a nineteen year time period as labor union disputes along with the supply and design problems slowed the construction. Efforts were not helped by repeated—albeit usually unsuccessful—sabotage efforts. Actual effective work on the station took less than two years, and involved resources from every corner of the Empire being funneled to complete the project.[5]

Of particular concern was the technology required to create the massive superlaser, the very heart of the weapon. To this end, Tarkin brought together some of the most brilliant minds of the galaxy (including Tol Sivron, Qwi Xux, and Bevel Lemelisk) and build a proof-of-concept model at Maw Installation. This model would eventually become known as the Death Star prototype.

DS1 under construction

The Death Star under construction.

It is uncertain exactly when the term "Death Star" came into use in connection with the project. The earliest known reference to the name Death Star as a codename for the project was in a memorandum c. 5 BBY written by Imperial advisor Ars Dangor, which formally placed Wilhuff Tarkin in overall command of the project. Once the Imperial Ministry of Propaganda began using the name Death Star, the name stuck.

Even before the Death Star became fully operational, its detention blocks began to fill with detainees. Political troublemakers, Rebel insurgents (who were beginning to organize), dangerous pirate forces, and even some survivors of the Royal Naboo Security Forces who had boldly tried to stop their Queen's assassination, as well as myriad other enemies of the Empire, were made to quietly "disappear" from public view within the enormous prisons of the incomplete battle station.

In the year 2 BBY, four individuals who would later become leaders of the Rebel Alliance were transferred to the Death Star: the Senators Bail Organa, Garm Bel Iblis, and Mon Mothma, along with a former Jedi General named Rahm Kota. Palpatine had the four sent to the battle station following their capture on Corellia, planning to have them interrogated and tortured, followed by public execution. This plan was foiled by the former apprentice of Darth Vader, Galen Marek. Galen arrived and attempted to rescue the rebels, and in the end sacrificed himself so the four leaders could escape.[15]

The stormtroopers of the 501st Legion were among those assigned to protect the Death Star's interior. They were forced to put down a prison break that had somehow occurred within the station, led by a Jedi Padawan inmate. A number of prisoners were able to obtain a partial technical readout of the battlestation, which were beamed to a Rebel cell on Polis Massa. Shortly after this embarrassing debacle, the 501st were reassigned and moved off the station.

The missing plansEdit

Main article: Death Star plans

If the Rebels have obtained a complete technical readout of this station, it is possible, however unlikely, that they might find a weakness, and exploit it."
The plans you refer to will soon be back in our hands.

General Cassio Tagge and Darth Vader, Star Wars Episode IV: A New Hope

The history regarding the acquisition of the plans by the Rebel Alliance is a complex and convoluted one. Although three separate sets of schematics were stolen, only combined could they provide a thorough analysis of the space station's weaknesses.

Learning the truthEdit

Princess Leia Organa of Alderaan, perhaps while the Alliance Intelligence investigated the existence of a superweapon, was informed about it by a soldier she rescued on Ralltiir. The existence was justified by Intelligence on AX-235. Rianna Saren's report on the destruction of Despayre confirmed the power of the battlestation's superlaser.

Contemporaneously, Rebel leader Garm Bel Iblis, with help from professional thief Moranda Savich, acquired a series of heavily encrypted datacards from an Imperial defector on Darkknell. It was only after sending these to the Alliance that the resistance discovered the exact purpose of Governor Tarkin's "pet project": to inspire fear through the destruction of worlds.

The combining of schematicsEdit

Main article: Operation Skyhook

Once it was finally finished, the Death Star was the Emperor's favorite toy.

501st stormtrooper, Star Wars: Battlefront II

Following the Death Star Uprising, the aforementioned set of partial schematics was beamed to the Rebel base on Polis Massa. While it wasn't long before the Fighting 501st executed a swift raid on the compound, Bothan spies managed to transmit this first set off-base, presumably to their other asteroid base, AX-235. With one piece of the puzzle secure, the Alliance scrambled to secure more sets of plans, sets which would complete the picture.


Gun batteries attempt to defend against Rebel starfighters.

It was at this time that a rumored Alliance cell on Kalakar VI had acquired the plans, and Palpatine and Vader investigated the matter personally. In the end, the effort was deemed a wild bantha chase, as the planet was devoid of any Rebel sympathizers at all; in truth, the mission was most likely a ruse orchestrated by the Emperor to test his pupil's worth.

Meanwhile, real efforts to secure the Death Star plans were underway. Rebel agent Kyle Katarn, a former Imperial Academy graduate, had used his combination of stealth and brute force to wrest a supplemental set of plans from the Empire during the Battle of Danuta. With two smaller examples of the schematics, the Rebels set about acquiring the last, largest set of plans.

Through the actions of operative Bria Tharen and Red Hand Squadron, the Alliance engaged the enemy on the planet Toprawa. Operation Skyhook, as it was called, resulted in one of the biggest victories to date for the Rebels: the final set of plans would at last be in their control.

On Toprawa, operative Havet Storm transmitted the plans, as well as the plans for the superlaser, to Tantive IV, a consular ship in orbit. With these two additional bits in tow, the starship fled the system and intercepted the readouts from Katarn and AX-235, with Princess Leia herself spearheading the entire operation. By taking advantage of her diplomatic immunity, Leia hoped to seek out her father's friend, Obi-Wan Kenobi, and from there extrapolate a plan to analyze the schematics for a weakness in the superweapon's defenses.

But fate would take a different turn.

The events above and on TatooineEdit

Main article: First Battle of Tatooine (Galactic Civil War)
DS command deck

Grand Moff Tarkin reviews the battle plan on the command deck of the Death Star.

When Darth Vader and the 501st led a raid aboard Tantive IV, no plans were to be found. At the last moment, Leia, realizing the importance of the plans' survival, placed them inside astromech droid R2-D2 who, with his companion C-3PO, made his way down to the surface of Tatooine. After being purchased by moisture farmer Owen Lars from some scavenging Jawas, the plucky little astro-droid knew he was getting close to finding Kenobi. Accompanied by Owen's step-nephew, Luke Skywalker, R2 found who he was looking for.

The Destruction of AlderaanEdit

After being captured by Lord Vader, Princess Leia was charged with espionage and treason and taken to the Death Star for interrogation, Vader's obsessive quest for the Rebellion's hidden base of operations being his primary focus. Proving to be substantially resistant to Vader's methods of torture, General Tarkin ordered her to be brought to his command center. Threatening Leia with the destruction of her homeworld, Alderaan, Leia deliberately misled Tarkin, saying that the Rebel base was on the remote planet of Dantooine. However, Tarkin, stating that Dantooine was "far too remote for an effective demonstration," ordered the destruction of Alderaan while Leia watched helplessly. Billions were killed; the overall effect of the operation was to spread the message of fear the Empire needed to keep all planetary systems under control.

Battle of YavinEdit

Main article: Battle of Yavin

Luke, Obi-Wan, Han Solo, Chewbacca, C-3PO, and R2-D2, onboard the Millennium Falcon, were captured in a tractor beam after coming out of hyperspace near Alderaan and drawn onto the Death Star. They hid in several secret compartments in the ship while stormtroopers searched it, and then headed up to the control room. Obi-Wan devised a plan to free the ship by turning off a tractor beam projector.


The Death Star is destroyed at Yavin.

After learning that the Princess was onboard, Luke, Chewie, and Han headed to her cell block. They managed to free her despite being attacked by stormtroopers. They fled by climbing into a garbage chute, and despite being nearly crushed as the walls compacted, R2 shut them down, and they escaped. Heading back to the Falcon, they spotted a company of stormtroopers. The troopers were distracted by the battle between Obi-Wan and Darth Vader, allowing them to make it to the ship and take off, headed for Yavin IV.

There, R2-D2 uploaded the data tapes and Alliance tactician Jan Dodonna found a weakness in the station: an unshielded thermal exhaust port that, if fired upon with a proton torpedo, would set off a chain reaction and annihilate the battlestation.

The ensuing Battle of Yavin destroyed the Death Star, just as it was positioned to destroy the newly discovered Rebel Base on Yavin's fourth moon. The Death Star was destroyed by Luke Skywalker in the trench run, who, with the help of the Force, successfully fired two proton torpedo's into the exhaust shaft that led directly into the Death Star's main reactor. Yavin 4 would have been destroyed by the Death Star seconds earlier had it not been for the hesitations of Master Chief Gunnery Officer Tenn Graneet, who delayed the firing because of his regrets for destroying Alderaan even though he was loyal to the Empire. He told his crew to "Stand by," unknowingly buying the Rebel Alliance the time to successfully destroy the battlestation.[3]

The reactor exploded, destroying the battlestation and killing everyone still on board, including Grand Moff Tarkin. It would prove a decisive moment for the Rebellion, and gave young Skywalker his first spot in galactic history. Even though the Empire remained to be the prominent military power in the galaxy, this major Alliance victory gained credibility and support for the freedom fighter movement. In the months following the battle, thousands of star systems joined the Alliance, leading to the escalation of the Galactic Civil War.

Behind the scenesEdit

Deathstar negwt

The first Death Star.

The West End Games RPG claimed that the first Death Star had a diameter of 120 kilometers.

The fact book Star Wars: Incredible Cross-Sections and detailed scaling of the station in the film showed that the Death Star actually was 160 kilometers in diameter. However, according to statements by Grant McCune, Chief Model Maker for the movie [1] the scale used for the Death Star in the film was 1:180,000. The Death Star model was 120 centimeters in diameter[2] which indicates that the Death Star was intended to be 216 kilometers in diameter.

In the early production of the original movie, the hollow dish was designed to be on the equator, but then it was decided to be on the "northern" hemisphere. However, this old design can still be seen in the grid plan animations seen in the movie. This is because the animation was created before the prop designers decided to change it, leaving therefore a blooper. The explanation that the plans represent an earlier version is invalid, since the original plan in Attack of the Clones shows the "later" form.

In the Revenge of the Sith DVD commentary, Lucas made an off-hand comment that the Death Star seen at the end was the first Death Star. He explained this was due to "union disputes and supply problems." (Intriguingly, the lead characters in Kevin Smith's short film Clerks speculate at some length about whether the Imperial workers were unionised or subcontractors. This may or may not be an in-joke by Lucas.) This has been conflicted by other sources in the Star Wars canon, including Jedi Search and Champions of the Force. These sources explain that what is seen in Revenge of the Sith is a prototype Death Star to the one in A New Hope. This was retconned in The New Essential Chronology, where it is stated that the latter was a testbed prototype for the superlaser to be installed on the former. However, the Death Star shown at the end of Revenge of the Sith is in fact the first Death Star.

A full-length novel, written by Michael Reaves and Steve Perry, was released in October 2007, and completely explains the events in and around the Death Star, during its construction, deployment, and eventual destruction.

In many video games, particularly the Rogue Squadron trilogy, the player has to avoid many obstacles and make several turns when flying in the Death Star's trench. The schematics/layout of the Death Star show no objects or turns in the trench, and the appearance of the trench in video games is deemed non-canon.

Non-canon historyEdit


The Justice Star

In the non-canon comic Star Wars Infinities: A New Hope, the attack on the battlestation fails, and the Empire manages to drive away the Rebel forces. Five years later, the Death Star is renamed the "Justice Star" to mark the fifth anniversary of the Rebels' defeat and becomes a mobile seat of government for the newly-restored Imperial Senate.

The Justice Star traveled from one system to the next, effectively replacing Coruscant as the center of the Empire. In an impressive display of symbolism, the Justice Star was stationed in front of Coruscant's sun, to eclipse it and thus be seen as a shining symbol of a new source of light for the galaxy.

This symbol was short-lived, however, as Yoda and R2-D2 commandeered the Justice Star, and used it to attack the Imperial Fleet. Once the fleet was destroyed, they sent the battle station crashing into Coruscant's surface, killing Emperor Palpatine and destroying the massive superweapon.


Non-canon appearancesEdit


Notes and referencesEdit

External linksEdit

de:Erster Todesstern es:Estrella de la Muerte I hu:Első Halálcsillag nl:Death Star I Deep Space Mobile Imperial Battle Station pt:Estrela da Morte I ru:Звезда смерти I fi:Kuolemantähti I

Community content is available under CC-BY-SA unless otherwise noted.