Science fiction novels and movies are packed with far more ideas as a starting point for action-packed adventures, rather than a serious attempt to predict future trends in science and technology. Some of the most common metaphors, such as accelerating a spacecraft to great speed in seconds without crushing its crew, are, as we understand it, totally impossible according to the laws of physics. Still, these exact same laws seem to allow other seemingly distant science fiction concepts, from wormholes to parallel universes. This is a summary of some sci-fi ideas that you can actually implement, at least in theory.
The idea of a wormhole, a shortcut through space that allows you to move between distant parts of the universe almost instantly, sounds like it was created as a fictional story driver. But under the more formal name of the Einstein-Rosen Bridge, this concept existed as a serious theoretical concept long before science fiction writers got it.Come out from Albert Einstein‘NS General theory of relativity, Which view gravity As a space-time distortion caused by a huge object. Einstein, in collaboration with physicist Nathan Rosen, theorized in 1935 the following points of very strong gravity: Black Hole, Can connect directly to each other. And the idea of a wormhole was born.
The idea of actually passing through a wormhole was taken seriously until the 1980s when astrophysicist Carl Sagan decided to write a science fiction novel, as the forces around the black hole would destroy anyone approaching the black hole. Not considered.according to BBCSagan advised fellow physicist Kip Thorne to come up with a viable way to move interstellar distances in an instant. Thorn has formally devised a way in which humans may achieve interstellar travel by crossing wormholes intact — theoretically possible, but very unlikely in practice. The result found its way in Sagan’s novel.contact“(Simon & Schuster: 1985) Later, Jodie Foster was featured in the leading film.
Wormholes are unlikely to be the simple and convenient means of transportation depicted in the movie, but scientists have now come up with more. A viable way to build a wormhole From Thorn’s first proposal. If the wormhole already exists in space, it may be possible to identify the wormhole using a new generation of gravitational wave detectors.
An essential prerequisite for most space-based adventure stories is the ability to move from A to B much faster than it is today. Wormholes aside, there are multiple obstacles to achieving this with traditional spacecraft.It requires a huge amount of fuel, has the destructive effect of acceleration, and in space Strictly imposed speed limit.. This is the speed at which the light travels. Exactly one. Light year Every year, it’s not at all fast in the context of the universe. Proxima Centauri, the second closest star to Earth, is 4.2 light-years away from the Sun, and the galactic center is a whopping 27,000 light-years away.
Fortunately, there are loopholes in the speed limit of the universe. It only determines the maximum speed at which we can move. Through the universe.. As Einstein explained, the space itself can be distorted, so it is probably possible to manipulate the space around the ship in a way that overturns the speed limit. Spacecraft still move in the surrounding space at a speed slower than the speed of light, but the space itself moves faster.
This was what the Star Trek author had in mind when he came up with the concept of “warp drive” in the 1960s. But for them, it was just a plausible phrase, not real physics. It was in 1994 that theorist Miguel Al-Kubier found a solution to the Einstein equations that produced the actual warp-drive effect, a sister site of live science. Space.com reported, Shrink the space in front of the spacecraft and extend it back. In the first place, Alcubierre’s solution was as devised as Thorne’s crossable wormhole, but scientists are trying to improve it in the hope that it will be practical someday.
The concept of a time machine is one of the best sci-fi plot devices that allows characters to go back and change the course of history — for better or for worse. However, this inevitably raises a logical paradox. For example, in “Back to the Future,” would Doc build a time machine if the same machine wasn’t visited by future Marty? Because of this paradox, many believe that time travel must be impossible in the real world, but according to the laws of physics, Can really happen..
Like wormholes and space warps, the physics that tells us that it is possible to go back in time comes from Einstein’s general theory of relativity. It treats space and time as part of the same “space-time” continuum, and the two are closely related. Just as we talk about distorting space with wormholes and warp drives, time can be distorted. Scientists sayClosed timelike curve“-Although it can be called a time machine to be exact.
The conceptual design of such a time machine was published in 1974 by physicist Frank Tipler, according to physicist David Lewis Anderson. Anderson Institute, Private research institute. This cylinder, called the Tiplar Cylinder, must be large (at least 60 miles (97 km) long, according to Humble), very dense, and has a total mass comparable to the mass of the Sun. To function as a time machine, the cylinder must rotate fast enough to distort space-time so that time wraps around. It may not sound as easy as installing a flux capacitor in DeLorean, but it has the advantage that it actually works, at least on paper.
A typical science fiction example of teleportation is “Star Trek”.“” Transporters, as the name implies, are simply depicted as a convenient way to transport personnel from one location to another. However, teleportation is quite different from other means of transportation. Instead of the traveler moving through space from the starting point to the destination, teleportation creates an exact replica at the destination while the original location is being destroyed. Teleportation is certainly possible in these terms, and at the level of subatomic particles rather than humans. IBM..
The real-world process is called quantum teleportation. This process copies the exact quantum state of one particle, such as a photon, to another particle hundreds of miles away. Quantum teleportation destroys the quantum state of the first photon, so it looks as if the photon was magically transported from one place to another. This trick is based on what Einstein called “action at a distance,” but is officially known as: Quantum entanglement.. If the “teleported” photon contacts one of the entangled photon pairs and a measurement of the resulting state is sent to the receiver (where the other entangled photon is), the latter photon Is as follows. It has switched to the same state as the teleported photons.
Even a single photon is a complex process and there is no way to scale it up to an instant transportation system like in Star Trek.Still, for quantum teleportation Important applications In the real world, such as anti-hacking communications and ultra-fast quantum computing.
The universe is everything our telescope reveals to us — every billion galaxies big Bang.. But is that all?The theory says maybe not: there may be a whole Multiverse Of the universe there. The idea of a “parallel universe” is another familiar sci-fi theme, but when it appears on the screen, the details are usually slightly different from our universe. But the reality may be much stranger than that. The basic parameters of parallel universe physics, such as gravity and the strength of nuclear forces, are different from ours. A classic depiction of this kind of truly different universe and the creatures that live there is Isaac Asimov’s novel The Gods Themselves.“((Double day: 1972)..
The key to a modern understanding of the parallel universe is the concept of “eternal inflation.” It depicts the structure of infinite space in a state of permanent and incredibly rapid expansion. From time to time, the local spots in this space, the self-contained big bang, drop out of general expansion and begin to grow at a more subdued pace, forming material objects such as stars and galaxies within it. Makes it possible. According to this theory, our universe is one such region, but there may be countless other regions.
Like Asimov’s story, these parallel universes may have completely different physical parameters than ours. Scientists once believed that only a universe with substantially the same parameters as us could support life, but recent research has shown that the situation may not be so restrictive. Suggests, Live science previously reported.. So while you probably won’t come into contact with Asimov’s aliens, as is happening in the novel, there is still hope for Asimov’s aliens. Nevertheless, traces of other universes may be detected by us by other means. The mysterious “cold spot” of the cosmic microwave background radiation has even been suggested to be a scar from a collision with a parallel universe, according to Ivan Baldley, a professor of astrophysics at the University of Liverpool John Moore in the United Kingdom. It is written as. conversation..
Originally published in Live Science..
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