Freeman says a wormhole is a "rip in the fabric of space itself." However, wormholes may be a sci-fi fantasy. Leaving aside the huge quantities of the "exotic matter" of negative energy needed, Stephen Hsu has mathematically shown that any quantity of negative energy would be unstable and dangerous.

Joo Magueijo states that a variable speed of light can solve the homogeneity problem [that matter looks spread out evenly throughout the universe]; others believe cosmic inflation provides the answer. Cosmic strings are proposed pathways where the speed of light may be faster.


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One of the things that we're reminded of frequently during the Dominion occupation of Deep Space Nine is that the Dominion has thousands of ships ready and waiting in the Gamma Quadrant to come pouring through the wormhole once the minefield laid by Starfleet is deactivated.

When the minefield is finally dismantled, the Female Changeling gives the order to signal the (presumably) first wave of Dominion reinforcements to come through to the Alpha Quadrant, only to have them stopped (and apparently removed from existence entirely) by the Prophets at the behest of Captain Sisko. After which, the Dominion make a hasty retreat and Starfleet return to Deep Space Nine.

So why was that the end of it? Why did no further Dominion reinforcements come through the wormhole? Long range communication is apparently possible through the wormhole, based on Gul Dukat conducting secret negotiations with the Dominion, allowing the Cardassian Union to become a member.

It's unlikely that the Dominion considered the loss of 2800 ships to be so damaging that the wouldn't attempt to send more through in the future. It seems odd to me that they would give up trying to reinforce the Jem'Hadar troops and ships in the Alpha Quadrant quite so easily.

As the title says, I can not get any of my military ships through a wormhole. I do not know about my civilian ships, but I do not think it matters. The wormhole should be explored, the icon has changed from red to white. When attempting to go through my fleet's icon constantly changes between resting and moving but does not go anywhere. I have tried clicking on the wormhole directly, clicking on the other side, and clicking on a system on the other side.

It's autumn, (obviously) Bearger has spawned. I was away from home, so I figured I'd let him spawn and then jump through a conveniently nearby wormhole as it is still very early in this game and I am not equipped to kill him. But on the other side of the wormhole, there he is! which is bad, since this happens to be the wormhole right by my home base. so I go back through, and sure enough, he comes with me. Is this normal? I'm pretty sure I've used wormholes to flee giants before... anyone else seen this?

We revisit the numerical evolution of Ellis-Bronnikov-Morris-Thorne wormholes, which are constructed with a massless real ghost scalar field. For our simulations, we have developed a new code based on the standard 3+1 foliation of spacetime. We confirm that, for the massless symmetric wormhole, a pulse of regular scalar field causes the wormhole throat to collapse and form an apparent horizon, while a pulse of ghost scalar field can cause the wormhole throat to expand. As a new result, we show that it is possible for a pulse of regular matter to travel through the wormhole and then to send a light signal back before the wormhole collapses. We also evolve pulses of matter traveling through massive asymmetric wormholes, which has not previously been simulated.

(a) The solid black curve plots the wormhole throat radius, Rth, as a function of time for the same evolution shown in Fig. 1. The pulse of regular matter traveling through the wormhole causes the wormhole throat to collapse. The dashed purple curve shows the wormhole throat radius for a pulse of ghost matter with positive amplitude, which causes the throat to expand. (b) The vertical black line marks the location of the wormhole throat for the same evolution shown in Fig. 1. The blue curve plots the apparent horizon.

The vertical black line at the bottom plots the position of the wormhole throat, and the blue curve plots the apparent horizon. These are the same quantities plotted in Fig. 2, except that the slicing condition in Eq. (38) allows the evolution to continue further in time. The thick black curve plots the position of the peak of the leftmost spike in Fig. 1, i.e., the position of regular matter as it travels through the wormhole. The remaining green curves are null geodesics, representing the path of light signals sent from the matter field. We can see that some of the light signals are able to travel back through the wormhole before it collapses.

Analogous to Fig. 2, except for massive asymmetric wormholes. (a) The solid black curves are for the same evolutions shown in Fig. 4 and, from bottom to top, are for A1=0.1 and 0.3. The dashed purple curves are for pulses of ghost matter and, from bottom to top, are for A1=0.1 and 0.3. (b) Both curves are for the same evolutions shown in Fig. 4 and, from left to right, are for A1=0.1 and 0.3.

Each curve uses the same initial data as used for the purple curve in Fig. 2 for a ghost scalar field with positive amplitude traveling through the massless symmetric wormhole. Each plot is made using grid spacings r=0.01, 0.005, 0.0025, and 0.00125. Neighboring curves in each plot drop by a factor of 4, indicating second order convergence. See the Appendix for details.

Analogous to Fig. 8, except for using the same initial data as used for the bottom row of Fig. 4 for a regular scalar field traveling through a massive asymmetric wormhole. Neighboring curves drop by a factor of 4, indicating second order convergence.

A wormhole is a tunnel through spacetime that connects different parts of the cosmos (illustrated). Scientists report that a black hole circling a wormhole would emit a telltale pattern of gravitational waves.

A wormhole is like a tunnel between two distant points in our universe that cuts the travel time from one point to the other. Instead of traveling for many millions of years from one galaxy to another, under the right conditions one could theoretically use a wormhole to cut the travel time down to hours or minutes.

A wormhole is a tunnel in the fabric of space. It would link two points in the cosmos. Wormholes are just theoretical. That is, scientists think they could exist, but no one has ever seen one. If they do exist, wormholes could provide shortcuts to distant parts of the universe. Or they might serve as bridges to other universes. There even may be multiple types of wormholes, each with different features.

Like wormholes, ghost matter is only theoretical. In theory, it would respond to gravity in exactly the opposite way that normal matter would. That is, a ghost matter apple would fall up from a tree branch instead of down. And ghost matter passing through a wormhole would push the tunnel outward, rather than pull it inward to collapse.

universe: The entire cosmos: All things that exist throughout space and time. It has been expanding since its formation during an event known as the Big Bang, some 13.8 billion years ago (give or take a few hundred million years).

The wormhole theory postulates that a theoretical passage through space-time could create shortcuts for long journeys across the universe. Wormholes are predicted by the theory of general relativity. But be wary: wormholes bring with them the dangers of sudden collapse, high radiation and dangerous contact with exotic matter.

In 1935, Einstein and physicist Nathan Rosen used the theory of general relativity to elaborate on the idea, proposing the existence of "bridges" through space-time. These bridges connect two different points in space-time, theoretically creating a shortcut that could reduce travel time and distance. The shortcuts came to be called Einstein-Rosen bridges, or wormholes.

"The whole thing is very hypothetical at this point," said Stephen Hsu, a professor of theoretical physics at the University of Oregon, told our sister site, LiveScience. "No one thinks we're going to find a wormhole anytime soon."

Einstein's theory of general relativity mathematically predicts the existence of wormholes, but none have been discovered to date. A negative mass wormhole might be spotted by the way its gravity affects light that passes by.

Certain solutions of general relativity allow for the existence of wormholes where the mouth of each is a black hole. However, a naturally occurring black hole, formed by the collapse of a dying star, does not by itself create a wormhole.

If a wormhole contained sufficient exotic matter, whether naturally occurring or artificially added, it could theoretically be used as a method of sending information or travelers through space, according Live Science. Unfortunately, human journeys through the space tunnels may be challenging.

"The jury is not in, so we just don't know," physicist Kip Thorne, one of the world's leading authorities on relativity, black holes and wormholes, told Space.com. "But there are very strong indications that wormholes that a human could travel through are forbidden by the laws of physics. That's sad, that's unfortunate, but that's the direction in which things are pointing."

Wormholes may not only connect two separate regions within the universe, they could also connect two different universes. Similarly, some scientists have conjectured that if one mouth of a wormhole is moved in a specific manner, it could allow for time travel.

"You can go into the future or into the past using traversable wormholes," astrophysicist Eric Davis told LiveScience. But it won't be easy: "It would take a Herculean effort to turn a wormhole into a time machine. It's going to be tough enough to pull off a wormhole."

Although adding exotic matter to a wormhole might stabilize it to the point that human passengers could travel safely through it, there is still the possibility that the addition of "regular" matter would be sufficient to destabilize the portal. 2351a5e196

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