Adamskywalker007 wrote:Han's exact quote is: "The entire starfleet couldn't destroy the whole planet. It'd take a thousand ships with more firepower than I've..."
If we take Han's statement at face value then the entire Imperial starfleet is less than 1000 ships, regardless of anythign else. We are left with one of two possibilities. Either he is correct and the entire Imperial fleet is less than a thousand ships, or he is wrong and it is not impossible.
Uh... I don't think basic logic works that way. If Han asserts "The Empire doesn't have a thousand ships with more firepower than I've ever [seen/imagined/verbed]" that does not imply the Empire has less than one thousand ships. It means the Empire has less than a thousand ships
which have the requisite firepower.
If, for example, blowing up a planet takes about 10^33 joules of energy, then for a thousand ships to destroy the planet would require each ship to deliver 10^30 joules of energy, over a reasonably short span of time. Doing it in a day would require each ship to deliver on the order of 10^25 joules of energy per second, which works out to about 2.5 petatons per second. Doing it in ten days, 250 teratons per second per ship.
(these are very rough numbers)
Now, if we assume Han knows
fairly precisely how hard blowing up a planet is, he's asserting that the Empire doesn't have a huge number of ships that can keep up that volume of fire for that length of time. Maybe it has one or two, or even a dozen, but not hundreds or thousands.
If we assume his knowledge is less precise, then he's saying "blowing up a planet would be too hard. It'd take powerful ships, a huge swarm of them, each with unthinkably great firepower." In this context, "a thousand" is metonymy for "a huge number," not necessarily exactly one thousand- 999 would probably be enough.
The key point is the unthinkably great firepower. Han may be off by one or two orders of magnitude in his estimate of the ability of destroying a planet, but he's saying that all the Imperial fleet together couldn't blow up a planet. Even if they were numerous enough, their ships don't have the vast firepower it would take.
Another option is that he was not referring to an Imperial starfleet in absolute terms, that he was referring to a smaller body such as sector fleets. This idea fits with the reference to "your starfleet" by the Imperial officers around the Death Star table.
So would normal interservice rivalry- say, the commander of the Imperial Army garrison referring sneeringly to the Navy as "your" organization while speaking to navy men.
Han never actually says its impossible, just that he didn't see the Imperial fleet as being able to do it. If we go by the theory that planetary shielding is what prevents planetary destruction, then it would make sense that he would have considered it impossible in such a short time period.
He says nothing about the time period.
If we were forced to accept that the Starfleet actually does have enough raw firepower to destroy the planet, then saying it couldn't happen that fast would be the best possible backup explanation.
But at the moment there is no concrete piece of canon that tells us that it
must be possible for the regular starships of the Imperial fleet to blow up a planet by direct fire of conventional weapons in a reasonable span of time.
I should also point out that Obi-Wan, while he also had a warning from the Force, was hardly surprised that it had happened. I would expect a veteran of the Clone Wars would have a better understanding of the firepower that can be unleashed in Star Wars space combat than a smuggler who had likely only dealt with Imperial warships involved in policing.
Alternatively, Obi-Wan is as surprised as Luke and Han, but unlike them is a serene man who has decades of training and experience as a philosophically oriented Jedi who reacts to an unexpected event with calm observations rather than bluster?
Simon_Jester wrote:It seems hard to believe that the Empire is 'balanced' by military threats so great that it cannot amass a majority of its own strength in one place for a single operation. If there were outside threats of that magnitude, one would expect them to be referenced somewhere in the movies, if only because the rebels would seek them out as allies... instead, the Empire is portrayed as the only significant military power in the galaxy.
The Empire being unwilling to deploy its entire fleet to one location hardly requires an equal threat. The Empire is fighting an insurgency. In counter-insurgency warfare, one of the key ideas is efficiency. The more resources used against a specific target, the less effective the occupying force will be. The US in Iraq also had massive military superiority, it didn't stop them from not having enough troops if things ever truly went badly.
Locally, at one instant in time, the US might not have enough troops. But if the US wanted to concentrate a mighty force in one place because it thought the situation merited it (e.g. Fallujah) they could, and did.
Star Wars hyperdrive is very mobile, and the only forces that would be needed to blow up a planet are precisely the big, bulky, capital ships that are
least necessary for counter-insurgency warfare. So if the Empire really did want to use a large fraction of its total fleet for a single operation, I see no reason why they couldn't.
Simon_Jester wrote:If the rate of fire is an issue, then the Death Star would be able to shoot a capital ship... once. Then wait an hour or three. Anyone mad enough to attack the Death Star would surely bring more than one ship. For purposes of fighting a serious naval battle, it would not be a very helpful weapon. Or at least there's no on-screen evidence of it.
If the ship it shot were something like the Executor, that would actually be quite useful. In any case, it would obviously require such a low power output to destroy a capital ship as opposed to a planet that there would be no need to recharge the superlaser first. If we use an estimate for an Imperial warship of 10^26 watts for its reactor, the Death Star's reactor at 10^33 watts(based on a recharge time of a day) would actually be able to fire nearly continuously as long as it had fuel as there would be no need to waste time recharging for a full power shot. Despite also being more powerful, this is clearly what the Second Death Star did at Endor.
At least, assuming there was no modification of the superlaser between the DS-I and -II, which is
at least plausible so I will not dispute it.
However, I do not think it necessary to assume that Dodonna is counting the superlaser as part of the Death Star's firepower for purposes of describing it to the fighter pilots; the superlaser's ability to engage individual enemy ships is irrelevant to them. For that matter, Dodonna may not even know it; while R2-D2 gave him the plans to the Death Star, that doesn't mean the rebels have time to do anything more than count the turbolaser turrets and look for exposed reactor shafts.
But there is nothing that outright contradicts it either. That would be like seeing the first atomic bomb and declaring it impossible to equal with conventional firepower if one had never seen the firebombing efforts against Japan which actually did more damage than the two atomic bombs, though taking hundreds of planes instead of one. The fact that planetary destruction is a taboo among the various factions in most conflicts in Star Wars doesn't make it impossible.
I don't disagree, it's just that I don't think there's evidence
for the high firepower either. Dodonna's quote is ambiguous because of the context, and the high firepower is not directly demonstrated in movie canon. It is demonstrated in EU canon, but that has now been spiked, so we're back to square one.
Simon_Jester wrote:It's not obvious that the beam weapons on Republic gunships are the same type as the Death Star superlaser, even if they superficially appear to be of similar nature.
They appear to operate on exactly the same principle, using the same style of converging beams. Why would they be anything else but the same technology? By this logic we should assume that stormtrooper blasters and AT-AT blasters are fundamentally different.
Two things that look the same may not be the same in fact; a superlaser may have components other than just "converging beams" that make it far more efficient than a smaller converging beam weapon.
But, even conceding that you are right and they are the same technology, the LAAT composite beam weapons are (fifteen orders of magnitude) weaker than a proportional scaling-down from the Death Star would suggest. So there is no reason to assume that naval weapons
are as powerful as such a proportional scaling-down would suggest.
If decreasing size by a factor of a quadrillion from the Death Star to the LAAT can decrease power output by a factor of a quadrillion quadrillions... we cannot assume that "only" decreasing size by a factor of a billion would "only" decrease power output by a factor of a billion.
As to the question of beam size and scaling, there are clearly two scales in planetary combat versus space combat. As no one is interested in killing their own troops or masses of enemy civilians, weapons used in planetary warfare are proportionally much weaker than those used in space. The one possible exception we see is the Republic's artillery on Geonosis, which was presumably designed with the role of mobile coastal gun in mind. Even they presumably drained their energy reserve shooting down a single TF battleship core. Another limiting factor on planetary weapons and vehicles might be the fact that they seem to only use stored power rather than having their own internal power generations. Though this would logically also limit starfighters which don't seem to have such limits, being designed to potentially go up against opposing capital ships.
There is nothing to suggest that capital ships don't scale linearly with reactor size.
Even so, one would expect beam weapons to be designed to be
as powerful as feasible in light of the limits, and to have high-power settings capable of operating to the limits of the hardware in a pinch.
The massive disconnect between space and ground combat firepower in Star Wars is almost entirely a product of the assumption of teraton-level firepower on large starships. While this is amply supported by the old canon, it is at best an
assumption, sketchily supported by a handful of debateably interpreted quotes, when regarded only in terms of the movie canon.
It seems far more plausible that the Death Stars (uniquely terrifying superweapons) possess an unusually high power density per ton compared to ordinary ships, than that
all such ships have spectacularly high power density even in the complete absence of direct evidence of this power being used.
Simon_Jester wrote:I'm not saying Han would know the details, but he'd probably have at least a rough clue what they can and cannot do. It's like, even a mildly knowledgeable person today might not know exactly what a B-52 is capable of, but they know that loaded with conventional bombs it can't flatten a whole state, but could probably flatten whole blocks of buildings. Or that a gun can kill a man but can't kill a tank, and would be gross overkill on a cockroach.
If someone knew that a single B-52 could level a city block and that generally they were used alone or in limited numbers, and then saw that all of Boston was leveled, their initial reaction might very well be that it seemed impossible.
Again, this is based on the assumption that Han reacted without thinking. There is no evidence for this.
Not if Alderaan was shielded. If the role of the Death Star was gross overkill for the purpose of cracking planetary shielding, then it would have a purpose even if the conventional Imperial fleet were easily capable of doing that level of damage to an unprotected world. Alderaan's shield lasted for 1/10th of a second against the Death Star. With that level of energy output, it would be quite difficult for the Imperial fleet to overcome Alderaan without a protracted bombardment.
If the Death Star's aggregate firepower is only, say, 2/3 of that of the starfleet, it would seem quite likely that they could bring down such a shield within minutes using only a small fraction of the starfleet's total strength.
Simon_Jester wrote:Right. I would assume Dodonna was neither grossly exaggerating nor grossly understating the Death Star's firepower. But given that literally no other weapon in the Star Wars universe exhibits anything like the raw per-ton firepower of the Death Star, and that everyone is baffled as to how the Empire can blow up whole planets until they find out exactly what the Death Star is...
When would we see a canon example of Death Star level per ton firepower? The only cases of capital ships cutting loose are against each other, who clearly have shields roughly equivalent to their guns.
We know how heavy the Death Star is, and we know its power output. The Death star is a metal ball roughly 100-200 kilometers in radius, and thus has a volume on the order of 1-10 million cubic kilometers. It is thus something like one billion times the volume of a lone star destroyer, estimating very roughly.
But the demonstrated power output of the Death Star superlaser is far, far greater than one billion times that
demonstrated by any star destroyer in the films. Thus, the Death Star can be said to have greater firepower
per ton
Simon_Jester wrote:It seems unlikely that the pre-Death Star Starfleet actually had the ability to totally obliterate planets and just chose not to use it for some reason.
Why? The United States has the ability to destroy most nations on Earth and hasn't since World War two. The fact that we have never seen anything that indicates that they have in the limited canon we see from the films, doesn't mean that they hadn't previously done so...
The very nature of the imperial order portrayed in the original movies suggests that had the Empire been able to do what the Death Star did, before building the Death Star, it would have
done what the Death Star did.
The 'planetary shields' argument holds, but it is based largely on EU content that is now decanonized, plus a couple of frames of Alderaan glowing on screen before exploding like a globe with a firecracker inside.
seanrobertson wrote:Are the films' novelizations still "canon"?
Both the Clone Wars and the ROTS novelization can't possible be canon as the novelization is full of references to things from the original Clone Wars continuity like Labyrinth of Evil. The novelization explicitly is contradicted by the series in that the novelization claimed that Obi-Wan and Grievous had never fought and that Obi-Wan and Anakin never had any experience with fighting Magnaguards, both of which happened repeatedly in the series.
Then, given the statements we have, the novelization is canon where it does not conflict the TV series, and noncanon where it does.
Borgholio wrote:If we take Han's statement at face value then the entire Imperial starfleet is less than 1000 ships, regardless of anythign else. We are left with one of two possibilities. Either he is correct and the entire Imperial fleet is less than a thousand ships, or he is wrong and it is not impossible
Ok here's my take on the matter. To destroy a planet, we know we need a certain amount of energy applied to the planet within a short enough time for it to explode, as opposed to simply melt.
If starship turbolasers inflict teraton-level damage, they are powerful enough to cause extensive localized 'shattering' and blow large amounts of ejecta into space. The cumulative effect (especially with good shot placement) would indeed be to blast the planet apart and fling the fragments into space, or failing that to vaporize them.
The Death Star does this in one shot of course, since that's what it's designed to do. But with the standard Imperial starfleet, the largest ships are the Executors (and we only ever see one on film so we have no idea how many more there are). To impart enough energy into a planet to destroy it with starships, you'd need to have a lot of ships targeting the same spot on the planet and all pummeling it down to the core with every weapon they have with enough force to break it apart entirely. So you would need a thousand ships the size of the Executor with way more power than they are capable of projecting. Han's statement may be off-hand, but it makes sense. Even if you take tens of thousands of normal Stardestroyers, they would be unable to concentrate their fire enough to blast the entire planet apart due to the "relatively" low output of each ship and the sheer number of ships needed.
That interpretation COULD be valid, but in my honest opinion, larger numbers of smaller ships could shatter a planet given Star Wars level energies.
To invoke the EU, there was a new class of Super Stardestroyer called the Eclipse. It was armed with a mini-superlaser capable of shattering a continent or a small moon, but not an entire world. Even something as massive as that, you'd need dozens of them to destroy an Earth-sized world. So you'd need dozens of a kind of ship that simply didn't exist in the OT, or a thousand of the kind of ship that we only ever see one of, armed with a scale of weaponry that we never see.
Now
that is closely aligned to my point. When Han is told "the planet has been destroyed" and tries to visualize what it would take to make that happen, he says it's impossible because it would take vast numbers of unprecedentedly large ships. Maybe he believes such ships
could exist, or that a few of them exist, but nowhere near enough of them, and nowhere near well-armed enough, to destroy a whole planet.
Patroklos wrote:There has always been the assumption that the energy of the DS's beam was the only factor in its ability to destroy a planet. I am sure it is quite integral to the process, but there is nothing to say that the specific function of how that beam works has as much to do with it than anything else. I can take two bombs of equal explosive force but get wildly different results via shaping or timed delay detonation or using explosives with different burn rates, etc. etc. I can shoot a Kevlar vest for hours with a pellet gun until I exert the same energy in a .45 but I will never get the same result of that .45 round even if I have all those pellets hit the vest at once. For all we know the DS laser shots in stages even if it superficially looks the same to us. Maybe there is a raw power shield busting first state, then a drilling second stage that allows un unimpeded specially formed third stage to deliver a specially formulated energy dump to pop the planet. Who knows.
Now eventually we will reach the limit of a specific planetary body to absorb energy regardless of the form delivered without it being destroyed in some fashion, but it might not look the same depending in each instance.
Since the energy imparted to the planet is the same regardless, and vastly exceeds the gravitational binding energy of the planet...
Honestly, there is NO way you could deliver that much energy to a planet without blowing it up, which is all Han knows has happened to Alderaan. So I think we're still well grounded in saying that Han's quote suggests that
Han believes that with Star Wars technology and a fleet the size the Empire owns, physically destroying an entire planet would be effectively impossible.
LaCroix wrote:The problem with Han's quote is that he stops.
There are so many possible ends for his sentences.
"It'd take a thousand ships with more firepower than I've seen on a Star Destroyer."
"It'd take a thousand ships with more firepower than I've seen on an Executor flagship to rip it apart this way."
"It'd take a thousand ships with more firepower than I've seen on Coruscant's orbital defense platforms."
"It'd take a thousand ships with more firepower than I've heard in *insert legend*."
Without it, it's just a shocked hyperbole...
Arguably true, but I think the meaning is clear in context- the incredulity suggests that he's going to end the sentence with an absolute denial- either such large ships do not exist
anywhere he knows, or exist in numbers far too small to do the job.