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Why is the space shuttle bigger than a lunar module?

I think the idea was for them to be the same... its just one of the scale things that some viewers noticed flaws with but we are as with the Egg Silo, we have to assume they are related, the Cargo Hold is on the ship and they are similar ships.

But they can explain it away by having them as different but similar just as in i guess a Private Jet is to a Jumbo Jet... same purpose different application of scale... one is for small transport of passengers the other for many.

As for if the Derelict and Juggernaught are different, is one a re-engineered Tech.. maybe... they can go that route... or just that its a evolution of Technology.

The one seemed more Organic... again who knows how they will explain it, but its supposed to be that they are similar... one is in New Pristine condition and the other is old and derelict and we have to remember the Technology is not so Synthetic and we should not look at it as a piece of Plastic, or Metal but more like a Plant or say Snake Skin and that a dead snake and tree looks different to a living one.

Does the ship Shrink when it dies... maybe we dont know.. but the inside certainly does not look that way.

Right now we have to assume they are similar ships, different ages.... and size

Maybe this is a good analogy?

This is assuming Derelict is older...  we dont know if the event is after the outbreak or prior on LV-223 but Ridley had said they are within a few hundred years but not as far as saying prior or after.

Then we have to assume the Warships are Hundreds if thousands of year old maybe?  at least Tens of thousands maybe?

One ship could predate the other, but it does not mean they are not both in use at the same time or similar.

People still do drive classic Cars,  say a 1965 Mustang, and some are driving a 2015 model...

Again i can use  these as a analogy.... but not every classic Mustang is Derelict...  some that are looked after or reconditioned are as pristine as new ones.

Also we cant rule out if the Derelict and Juggernaught are intended to be different sizes by quite a bit... or its just a case of Scale Wrong again... like Space Jockey vs Engineers.

Like other aspects of A L I E N, budget and time restrictions allowed for only a small section of H.R Giger's derelict outer wall to be built. The openings therefore had to fit within this section. Today the proportions could be extended digitally.

Giger's painting Wreck IV as opposed to the Derelict set, note the scale fits with the Juggernaut from Prometheus!

The vaginal openings are not necessarily passageways for the SJ's or Engineers to enter or exit the craft. That's an assumption on our part, because they are the only noticeable openings we view. As they appear in the film, the Derelict's SJ pilot could never have fitted through them.

I've always thought that the derelict's openings are more suitably sized for eggs to pass along. Perhaps how the egg cargo is deployed?

@ Lone - "The vaginal openings are not necessarily passageways for the SJ's or Engineers to enter or exit the craft. That's an assumption on our part, because they are the only noticeable openings we view. As they appear in the film, the Derelict's SJ pilot could never have fitted through them."

Exactly! I've always imagined that the creature is one with his chair and that they grow together from infancy through adult hood to become the space jockey.

Then, the jockey is lowered into the pilot chamber via the ceiling and over time the creature and chair (Jockey) merges with the derelict.

Or, they all grow together from infancy and continue to grow until death.

Therefor, no need for the vaginal entrancies/exits.

I love your explination that maybe they are used has openings to deploy the eggs from!

Will these inconsistencies be explained in future instalments? 

One of the biggest problems with making a film in the alien franchise is that everyone concerned in it's creation have their own individual visions of what they want it to be.

So, the director may follow the script to the letter but completely overlook certain aspects of the design from the concept art and that then leads to inconsistencies in things like scale.

I always imagined those openings to be where the Derelict defecated from. I am not kidding.

That explains the faecal shaped rock formations around it! :) 

N4- :D

Yes we can assume the Derelict was sitting there pooping for quite some time. That may be what the warning beacon was actually about: 'don't come down here right now. Give us a millennia or two'.

Edit: Apologies, Facehuggers! Way off topic there.

LOL @you guys!

You may be right NOOB! ;)

I wish H.R Giger was still amongst us, there purpose is just one of many things I would love to have asked him, bet he would have had a crazy-brilliant answer.

Mind you, I love the freaky, trippy mystery of Giger's otherworldly Space Jockey lifecycle! 

Lone-

He might say: 'They were there to make you uncomfortable. The Juggernauts were made the way they were not to serve their functionality, but to induce fear'.

Aorta: Maybe both functionality and a fear factor?

Indeed Gigers concept work the ship would have been much larger than the actual prop they worked on. Would have been closer to the Juggernaught

As far as the entrances they are indeed part of the ships rear and so was used as a back door but they may not have had that purpose at all... they could be some part of exhaust system.

Concept work seemed to show the ramp headed towards what we assumed was the rear of the ship, but as shown in how the ship flown in Prometheus its actually the other way around.

Here is a shot of the ship leaving the Hanger and you can see there is no ramp or entrance way to get to the ship apart from the opposite side to those 3 openings.

T_D-

Your screen name abbreviated looks like a little face!

Having fun with the concept, yes to both. It could be that the shape is also governed by the process that made it, particularly if it was grown. But I don't think it's unreasonable to imagine that the makers might have the luxury of influencing its appearance to their taste, given we may assume they can produce these vehicles with some ease. 

Of course it could very well be that, to do what the Juggernaut does, that is the required shape.

NOOB yes fear, and by the same token a strange fascination.

Aorta: :D I think that it is fun to see small silly details that I have never thought of before so that is fun.

Ha ha ha! A pooping derelict. LMAO!

Maybe then the egg chamber is the gut, and the eggs are intestinal polyps.

Ha ha ha! :D Who knows?

@Aorta

Defecating ships? Brilliant!

Maybe they 'breathe' through them? Or Black Goo is dispersed from there?

Lone-

One of my favorite things Ridley had to say about it was that it's shape was 'worrying'. So true.

Facehuggers!-

I like to think that, whatever happens with those openings, it's awful. I really was only half kidding, what if it is alive? It might produce solid waste. Leave it to a Juggernaut. Those things are the worst.