Do the laws of physics allow theoretically a stable wormhole, one end in a star, and the other end on a planet or space ship?
By controlling the size of the wormhole would it be theoretically possible to regulate the amount of power from zero to what the star can produce, and could the power of the star be use for the power needed to regulate it?
Has such a plan ever been theorized by science or sci-fi for a power generator or a space ship drive system?
You want to link a star to a ship through a wormhole?
Wormholes as most people visualize them link far flung regions of space through short conduits. If that’s the case you’ve just brought your ship uncomfortably close to a massive gravitational well and source of radiation and heat. Seems unwise.
To keep a wormhole stable you need exotic matter with a negative mass (not to be confused with anti matter which exists). No one has ever seen negative matter although I think I read somewhere that it might exist inside a black hole but obviously getting it from there is more than problematical.
Most wormholes are small and unstable. The presence of mass passing through them would cause them to collapse. You need the negative mass to keep it open.
If you had wormholes in the first place, why are you worrying about propulsion systems?
I think the notion is to point the end of the WH out the back of the ship and siphon off energy from the star to push the ship. Think of it like a hose between the engine and the star.
Sure. The recent Stephen Hawking “Into the Universe” specials postulated something close (basically consuming a star’s power to create a ship-traversable wormhole.)
But the problem with these sorts of scenarios is that they require multiple cascading levels of currently unattained scientific advances, so we can’t speculate well on what mechanism might be used, because we don’t know how to do it yet (or even if it’s possible). Traversable wormholes and the like are currently highly speculative – they make for good science fiction, but science doesn’t have the tools to really deal with them satisfactorily, and may not for some time.
I’ve just finished The Evolutionary Void, which features a device exactly like this: a wormhole with one end anchored on a planet, and the other in a sun, allowing energy to flow directly to power a piece of alien tech.
It may be much easier and/or faster to get a ‘wormhole end’ into the sun then to get the ‘wormhole end’ to the star system destination of your choice. Also can be used for a planetary power plant.
Or child science fair project 
Again, the big problem for wormholes is that they apparently require the existence of matter with negative mass. And as far as we can tell, all matter in this universe, even antimatter, has positive (or zero) mass.
So if you’ve got a way of creating negative-mass matter, then go nuts. But it might be that such a thing cannot exist in our universe, in which case wormholes are right out. I know, I know, antimatter was first theorized, and then was shown to actually exist. But out of all the atom-smashing we’ve done, at higher and higher energies, and all the observations of naturally occurring phenomenon we’ve done, we’ve never observed anything like negative-mass matter. Maybe we’ll find some tomorrow, though. Have we looked under the couch cushions?
the area between Casimir plates has a negative energy density, and I believe this is the type of exotic matter necessary to keep a wormhole open, but I’m not sure about that. If I remember correctly even Chronos didn’t know which specific flavor of exotic matter was necessary.
One other point, by the way: Even if it were possible to make usable wormholes, you’d still have a gravitational potential difference between the ends. Matter from the star is going to have to travel just as much uphill to go through your wormhole as it would to go to your ship through ordinary space.
Yeah, there are about a half-dozen different energy conditions, which are obeyed with different strictnesses, and I can never remember offhand which one is which. I’m pretty sure, though, that the void between Casimir plates doesn’t work, or we’d have wormholes already.
Could you explain this a bit further? Suppose I have a wormhole with one end at sea level on Earth and the other end in geosynchranous orbit. I want to put a steel ball in the bottom and have it pop out the top. Do I have to shoot the ball into the wormhole at (near) escape velocity to get it to come out the top? If I want to push the ball in slowly, does it take tremendous force to do it? Is it easier to push something through the wormhole if the other end is on Ceti Alpha V (local gravity 1G) than if it is in Earth orbit?
One book I read (many years ago, no idea of the title but the series used classic movie plots) used the wormhole to the centre of the sun as a nifty weapon. You dialed in the lifetime of the wormhole (in very short time increments) and tossed the grenade. The ball of plasma at solar core temperature and pressure that appeared was far more energetic than any chemical or nuclear device. Nifty.
Si
I don’t know about this.
If you think of a physical hose connecting the spaceship with the star then yeah, the star stuff would never travel up the hose because it is gravitationally bound to the star. Same reason water does not come out a hose when you dip one end into a pool or the water is your glass does not squirt out the top of a straw by itself.
Thing is a wormhole is not following the contours of our 3D space-time topography. That is the whole point of a wormhole. It is tunneling through space, not along it, which presumably is a shorter trip then traveling the same distance in 3D topography. Like going through the center of the earth to get to the other side rather than go around the earth to get to the same point.
How does gravity work in the WH? I have no idea. The star stuff is still presumably bound gravitationally to the star though so I see no reason it would siphon through the WH. Then again the WH presumably has negative matter keeping it open so perhaps that would act as “suction” (for lack of a better word).
Honestly I have no idea. Not sure anyone does.
I’d think then that electromagnetic radiation from the interior of the star would make the trip just fine. That’s a rather good power source right there.
Gordon R Dickson had a story involving a starship powered by a “solar tap”, he didn’t use the term “wormhole” though.
The novel Godplayers had a man who had an implanted weapon that used the same principle; open a wormhole to the center of the Sun and fire a chunk of stellar core at your target. He blew up a starship full of robotic religious fanatics with it; it was a fairly over the top story.
Come to think of it negative mass has a repulsive force so, just guessing, the wormhole would push things away from it.
I dunno…just thinking out loud.
With God, everything is possible.
But will he cooperate when you try to lock him in the engine compartment?
Doesn’t Hawking Radiation involve negative energy? When a virtual particle is created and one part of that falls into a black hole doesn’t that part become negative energy while the escaped half becomes positive energy?
Obviously we can’t get our hands on the stuff in the BH but if Hawking radiation is real then the stuff does exist.