If my understanding is correct, the Death Star ("version 1") was a spherical device in between the size of a giant asteroid and small planet, whose function was to create a beam of energy capable of destroying an entire planet. This function was successfully executed.

Starkiller Base was also a spherical weapon whose function was to create a beam of energy capable of destroying an entire planet.

In the most recent Star Wars film they displayed the scaled projections of the 2 weapons to emphasize the greater size of the Starkiller Base. It looked like the latter might've been 50 - 100x larger.

If Starkiller Base did the same thing as the Death Star but was so much larger, doesn't that imply a reversal of technological progress and scientific knowledge in the Empire / First Order since the days of the Death Star? I mean, the output is the same but the amount of resources being consumed seems analogous to a smartphone versus a multi-room 1950's mainframe.

Also, it seems like the Death Star has a major advantage in that it's reusable.

  • I dunno. It might be more advanced and powerful, but it's firing range ("left to right") is limited. Missed a targeting window to take out a planet or two? Better luck next year till the planet comes around the star again. I think the mobility of a DS (even with a 24-hr recharge time) can be more effective is some situations. As for "shock & awe", destroying an entire planet in a single blow is pretty damn shocking and awesome either way. There's a place for both in the arsenal.
    – iMerchant
    May 9, 2016 at 0:11
  • @iMerchant till the planet comes around the star again - doesn't starkiller base suck the soul/power/midichlorians out of the stars, i.e. killing it? If the star is in their way, it seems like they'd just suck it out of their way. May 9, 2016 at 12:39
  • "Star Killer Base was also a spherical weapon whose function was to create a beam of energy capable of destroying an entire planet." Second order difference, but apparently Starkiller didn't destroy the planet, just sterilized the surface.
    – kuzzooroo
    May 10, 2016 at 0:14
  • @WayneWerner, I think the hypothetical star that's getting in the way here is in the same solar system as the planet that's being targeted, not as the Starkillerbase itself.
    – kuzzooroo
    May 10, 2016 at 0:15

4 Answers 4


Starkiller Base is more advanced

It can destroy multiple planets simultaneously

enter image description here

Notice how the beam splits to destroy the entire Hosnian system.

From the script for The Force Awakens:



Poe confirms that the Starkiller Base destroyed the entire system:

POE: Finn's familiar with the weapon that destroyed the Hosnian system. He worked on the base.

The Death Star had a single superlaser, and as such would be hard-pressed to destroy multiple planets in a single shot—after which, of course, it had a significant recharge time of 24 hours (according to Star Wars: Everything You Need to Know).

Starkiller Base can hit targets at greater range.

According to Finn:

"It fires through a hole in the continuum that it makes itself. Everybody was calling it 'sub'-hyperspace."

The Force Awakens (novelization)

In addition,

Assuming that the rotation and inclination of the planet had been taken into account, the released blast of concentrated phantom energy would travel along a perfectly linear path, punching a small Big Rip through hyperspace itself until it left the galaxy— —or encountered something in its path that was of sufficient mass to intercept it.

The Force Awakens (novelization)

Finn nodded. “General Hux told us it’s the most powerful weapon ever built. He said that it can reach halfway across the galaxy.” Fresh murmurs of disbelief greeted this latest assertion. “And in real time. Because it doesn’t reach across the galaxy; it reaches through it.” He shook his head, which was starting to hurt from the effort of trying to explain what he had overheard but did not understand.

The Force Awakens (novelization)

Note that Finn's audience reacts to the revelation of the weapon's range with disbelief. This certainly seems to imply that the range is greater than anyone had believed possible, which must have included the range of the Death Star.

In addition, this last quote shows that Starkiller is instantaneous

The Death Star's weapon, as a laser traveling through real space, would travel at the speed of light. The Star Wars galaxy is over 100,000 light years wide.

Leia knew perfectly well that the Rebellion wasn’t coming to Corva sector anytime soon, not with the fate of the galaxy to be decided nearly a hundred thousand light-years away. The people of Sesid were alone—just as the people of Basteel were.

Moving Target: A Princess Leia Adventure

Even if it could reach halfway across the galaxy, it would take 50,000 years to reach its target—more than enough time for ships with hyperdrives to evacuate the entire planet.

Planetary shields may have also improved.

It is also quite possible that planetary shields have gotten stronger since the era of A New Hope, forcing the development of larger superweapons to penetrate them. Thus, even if the Starkiller base might not have been necessary to destroy Alderaan in the past, it would be necessary to destroy the Hosnian capital as of The Force Awakens

And lest you think that the Death Star is superior, because it can actually move around...

Like the Death Star, the Starkiller Base is mobile

enter image description here

  • 6
    Plus it's much easier to build bigger on the ground than in space.
    – Valorum
    May 8, 2016 at 23:08
  • @Richard - True.
    – Adamant
    May 8, 2016 at 23:09
  • 2
    I missed this detail. So, asides from the lack of mobility which is a decided disadvantage, the Star Killer Base was more advanced. Out of universe it was still incredibly similar to the Death Star. They basically re-used the Death Star and just said "but we'll scale it up and use the newest CGI". A little creativity would've been nice in my humble opinion (how about some space-age biological weapon or something this time?). I digress. Excellent answer.
    – Hack-R
    May 9, 2016 at 4:35
  • 1
    @Richard No it's not, not from a physics standpoint. Once you have the space-based infrustructure (IE Kuat Drive Yards) the benefits of zero G far out way in-situ materials or manufacturing capacity - which was likely minimal anyway. The parts for the original death star were built all around the galaxy, representing the industrial capacity of hundreds or even thousands of worlds. Starkiller base would be no different.
    – wedstrom
    May 9, 2016 at 17:27
  • 1
    More precisely, it was mobile. May 10, 2016 at 8:10

The output isn't the same.

The DS-1 is a moon-sized mobile battle station capable of destroying a planet. It fires a singular charged plasma beam through real space into the target planet's core, overloading it and triggering a chain reaction resulting in the planet's explosive disintegration from within. Its superlaser draws power from its own reactors and has a 24h cooldown.

The DS-2 (for completion's sake) is several times larger, but is capable of adjusting its power level (thus being more power-efficient in shooting at starships without going overkill with full power), has a much shorter cooldown (enough to repeatedly fire in one battle at Endor) and none of the DS-1's weaknesses that led to its destruction.

Starkiller Base is built into an existing planet (they didn't build the planet) capable of destroying multiple targets with one firing sequence. It charges its weapon by leeching solar power from the nearest star, storing the enormous amounts of power using dark energy, and can then fire it at multiple targets through the newly discovered sub-hyperspace, which - I believe - allows objects to travel visibly through real space at faster-than-light speeds (don't question me on the physics I didn't invent it). The effect is that the shots scorches the entire surface of whatever it hits without destroying the planet. There's nothing to suggest it can't fire again for a long time if there's enough power left from the nearby star.

You can observe technological advancements in various aspects, but possibly not in others. A few things to note:

  • The Empire and its First Order heir follows the principles of the New Order, of ruling with fear, shock and awe. Size is everything, and megalomania has long been a trait of the Empire and thus the FO. Just because they can miniaturise it doesn't mean they will, because it wouldn't be as fearsome to behold then.
  • Just because Starkiller was built into a planet doesn't mean it's the size of a planet. It seems to occupy maybe one quarter/half of the surface, maybe it occupies the planet's volume to that proportion too? That will still be a considerable growth in size from the DS-2 nonetheless.
  • The rule of thumb with the economics of technology is that, with the same budget level, you've a trade-off between new-ness & power, and size. Miniaturisation costs money that has to come from somewhere.
  • The First Order has less resources, but it has grown to be much more efficient with it, transforming from the quantity-centric Empire into the quality-centric FO.
  • Probably most of the size of Starkiller Base is the batteries. May 9, 2016 at 12:43

It needs to be considered that while the Death Stars were physically smaller, they were completely manufactured from scratch.

Starkiller Base, on the other hand, was not. Instead, it was built into an existing planet.

From the Star Wars databank:

Deep in the Unknown Regions, the First Order has constructed a superweapon that uses an entire planet as its weapons platform.

The novelization describes the converted planet:

The fleet of Star Destroyers stood off the white world. Spectacular and isolated, with a mean surface temperature varying from merely cold to permanently arctic, the planet had been altered: its mountains tunneled into, its glaciers hacked, and its valleys modified until it no longer resembled its original naturally eroded form. Those who had remade it had renamed it.

Starkiller Base.

Hollowed out of one snow-covered mountain was a central control facility. At its heart was a great assembly chamber that held hundreds of workstations and their attendant seats.

Not 100% of the planet was technology dedicated to the Starkiller weapon.

  • That's true. I did think about that, but in the hologram it looked like the whole planet was covered in technology anyway, but I still see your point.
    – Hack-R
    May 9, 2016 at 4:31

Starkiller Base is much more powerful, but it can't be able to be used more than 2x. The reason is because the sun has a limited amount of times that it can be taken to power the weapon.

  • 3
    This isn’t quite true. As indicated in some other answers (or perhaps comments on them), Starkiller base is fully mobile, and can transport travel through hyperspace. It is limited only by the number of stars in the galaxy.
    – Adamant
    Mar 15, 2017 at 1:19

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