Message on December 3rd，According to foreign media reports，A few days ago，According to the latest research of scientists，In Einstein’s general theory of relativity，It is possible to travel to the future，This is undisputed。In fact，Physicists manipulate the gravitational force around muons, tiny electron-like particles，Sending these particles into the future has been implemented。But this does not mean that this technology to send humans 100 years into the future will be realized anytime soon。

However，Scientists know very little about traveling back in time。Even so，Astrophysicist Eric W. Davis of the International Institute for Advanced Geosciences in Austin, USA. Davis) thinks this is still possible。He said，All it takes to travel to the past is a wormhole，The latter is the theoretical passage through time and space predicted in the theory of relativity。"Utilizing traversable wormholes，You can travel to the past or future。”

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Wormholes 188bet app have never been proven to exist，Even if a wormhole is discovered，They are probably too small to fit on one person，Not to mention starship。Even so，Davis’s article in the Journal of the American Institute of Aeronautics and Astronautics，Proposed the possibility of using time machines and wormholes to travel back in time。

Both general relativity theory and quantum theory appear to provide information along what physicists call a "closed time-like curve"，Or cutting off the passage of time and space - that is, several possibilities for time machine travel。In fact，Davis said，Scientists’ current understanding of the laws of physics has led to the creation of time machines，The latter provides a large number of space-time geometry solutions，Demonstrates the properties of time legends and/or time machines。

For example，Wormholes allow a spacecraft to travel from one point to another at faster than the speed of light。This is because the spacecraft takes a shortcut through time and space through the wormhole，Thus reaching the destination faster than light。At the same time，It does not violate the so-called limit law of the speed of light in the universe，Because in fact spacecraft have never traveled at faster than the speed of light。

Theoretically，Wormholes can not only cut space，Can also cut time。“In our physical two-dimensional space-time，The time machine 188bet Online Sports Betting and Casino is inevitable。" Davis wrote in the article。“Traversable wormholes (predictions of wormholes) will hatch a lot of follow-up research on time machines。”

However，Davis added，Turn a wormhole into a time machine is not easy。This is because according to the general theory of relativity，Once the wormhole is created，One or both ends of it will need to be accelerated through time to reach a given position。

Challenges faced

As for how the laws of physics prevent time travel through wormholes，There are several theories。“We not only assume that it is impossible in our lifetime，Also assuming that when the laws of physics are fully understood，The latter will exclude it completely。" said astrophysicist Robert Owen of Oberlin University in Cleveland, Ohio。Irving specializes in black holes and gravity theory。

Based on scientists’ current understanding，Maintaining the stability of the wormhole to enable time travel requires a large amount of foreign matter，Scientists’ understanding of the latter is very limited。General relativity cannot explain foreign matter - according to general relativity，Foreign substances do not exist。But foreign substances do exist，This is where quantum theory comes in。Same as general relativity，Quantum theory is a system that explains the universe，Equivalent to a lens through which scientists observe the universe。

However，The 188bet sports betting app download amount of alien matter observed by scientists is extremely small—not enough to open a wormhole。Physicists must find a way to generate large amounts of exotic matter，If they want to achieve this kind of quasi-faster-than-light travel，By extension, it is time travel。In addition，Other physicists have used quantum mechanics to postulate that time travel through wormholes would create some kind of quantum reverse reaction。

In quantum reverse reaction，Turning a wormhole into a time machine will create a huge accumulation of energy，Ultimately destroy the wormhole before it can be used as a time machine。However，The mathematical model used to calculate the quantum backreaction only considers one-dimensional space-time。“I am very confident，Because the theory (general relativity) has not yet failed，Therefore the space-time machine it predicts、Bend drive and wormhole still work and can be tested，No matter how quantum theory describes these objects。”

This demonstrates one of the key issues in time travel theory: physicists root their arguments in general relativity or quantum theory，Both theories are incomplete and cannot fully encompass the entire complex and mysterious universe。

Before physicists developed time travel，They must find a suitable way to reconcile general relativity and quantum theory，To formulate the quantum theory of gravity。This theory will 188bet sports betting app download serve as the basis for further research into time travel。Therefore，Irving argued that it was not yet certain whether time travel was possible。

“A wormhole-based space-time machine perspective takes into account general relativity，But it ignores quantum mechanics，" Owen added。"However，Considering quantum theory in calculations shows that space-time machines don’t seem to work the way we expected。”

Davis believes，From a theoretical perspective，Scientists have discovered everything they need to know about a time machine，He called on physicists to focus on faster-than-light travel。"Unless someone has created a wormhole or warp drive，Otherwise there is nothing exciting about the space-time machine。”Achieving this requires a universally accepted theory of quantum gravity，This is a huge challenge，So people should not rush to make time travel plans now。