Wormhole:The Biggest space mystery!!

Wormhole:

Wormhole

A wormhole is a theoretical passage or pathway or we can say gateway through space-time which could establish shortcuts for long journeys across the universe.Wormholes are predicted by the theory of General Relativity.Wormholes rise up the consequences of high radiation,abrupt collapse and dangerous contact with exotic matter.

A model of 'folded' space-time illustrates how a wormhole bridge might form a space-time pathway with at least two mouths,connected with an only one single throat or tube kind of structure.

It is also famously known as Einstein-Rosen Bridge,which is named after the renowned physicists Albert Einstein and Nathan Rosen.

Theory of Wormhole:

Wormholes were first theorized in 1916, although that wasn't called wormholes at that time. Reviewing another physicist's solution to the equations in Albert Einstein's theory of General Relativity,Ludwig Flamm, the Austrian Physicist realized the other solution was possible.He depicted a "white hole," a theoretical, time reversal of black hole.The entrances to both black and white holes could be connected by a space-time conduit.

In 1935, Einstein and physicist Nathan Rosen used the theory of general relativity to expand the theory, based on the existence of "bridges" through space and time.These bridges connect two different points in space-time, theoretically establishing a shortcut which could reduce the travel distance and time. 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."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 does not by itself create a wormhole, which is formed by the collapse of a dying star, .

Wormholes consist two mouths, with a throat or tube connecting the two. The mouths would most likely to be spheroidal. The throat might be a straight stretch, but it could also wind around, taking a longer path than a more conventional route might require.

Einstein-Rosen Bridge

Go into the wormhole:

Science fiction is filled with tales of expedition through wormholes.But in fact such travel is more complicated, and not just because we've yet to spot one.

The first problem is size. Primordial wormholes are predicted to exist on microscopic levels.They  are about 10–33 centimeters. However it is possible that some may have been stretched to larger sizes just because the universe expands.

The second problem comes from stability. The predicted Einstein-Rosen wormholes would be useless for travel because they collapse or damage quickly and abruptly. 

"You would need some very exotic kind of matter in order to stabilize a wormhole, and it's not clear whether such matter exists in the universe" said Stephen Hsu.

But the recent research found that a wormhole consisting of exotic matter could stay open and remain unchanged for longer periods of time.

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

But there are very strong indications that the 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 indicating.

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

Astrophysicist Eric Davis told that you can go into the future or into the past using traversable wormholes  .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."

However, British cosmologist Stephen Hawking has argued that such use is not possible.

"A wormhole is not really a means of going back in time, it's a shortcut, so that something that was far away is much closer," NASA's Eric Christian wrote.

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

Today's technology is insufficient to expand or stabilize the wormholes, even if they could be found. However, the scientists carry on their research on the concept of space-time travel keeping the hope that technology will eventually be able to utilize them.