Although very few scientists believe that something can travel faster than light and the great Einstein himself claimed that it’s impossible, it looks like the illustrious scientist may be wrong. …or not? A good proverb says that if there isn’t a way to achieve something, you should create a way. And that’s exactly what we’re talking about here.
Let’s say you want to go to your workplace from your home and you usually need an hour to do it by going on foot on the sidewalk. But now you instead choose to arrive at work in only 20 minutes by simply taking a shortcut and using the same speed when you needed an hour for the process. Literally speaking, you didn’t arrive faster to work in those 20 minutes because you used the same speed, but practically the process took less time and seemed like you were much faster than before.
Wormholes have the key
If you heard about wormholes, you might already see the analogy with the walk to your workplace. If not, bear in mind that wormholes are shortcuts in spacetime which can allow you to travel up to millions or even billions of light-years in just several seconds.
The problem is, wormholes can exist only theoretically, which means they aren’t naturally occurring events. It also means that somebody or something has to figure out a way of creating such an incredible structure.
For the first time, scientists claim they can build a wormhole
In the paper, entitled ‘Traversable wormholes in four dimensions’, Princeton Physicists Juan Maldacena, Alexey Milekhin and Fedor Popov declared: “We have constructed a traversable wormhole solution in four dimensions.” The physicists state that “this would be achieved by placing a large magnetic charge close to extremal black holes.” The scientists explained that rotating the black holes was important, “so that they can be kept apart, at least for a while until the electromagnetic radiation causes them to lose energy and eventually merge with each other.”
Physicists further say that the resulting wormhole “can be viewed as an entangled state of two black holes.” They describe in the paper how they have displayed a solution of an Einstein Maxwell theory with charged fermions, adding “It is a traversable wormhole in four dimensions and with no exotic matter.
“It balances classical and quantum effects and it has a non-trivial spacetime topology, which is forbidden in the classical theory.”
Black holes should act like wormholes
In order for the wormhole to be created as the physicists from Princeton propose, black holes should act like gateways to other regions of the Cosmos or maybe even to other Universes. Some scientists theorize black holes can act like wormholes between two points in time and space, and Einstein didn’t exclude the idea. In fact, the truth is that nobody knows for sure what falling into a black hole can lead to, but common sense is telling us that it’s extremely unlikely to remain alive after being attracted by an infinite gravitational pull.
Astrophysicist Neil DeGrasse Tyson even mocked the scenario from the Interstellar movie, were falling into a black hole caused the main character Cooper to travel back in time and to his home which it was light years away from him at that moment.
Dr. Michio Kaku pointed out very clear by saying: “Einstein’s equations do predict that black holes might be used as time machines or gateways to other universes but these equations are unreliable because the gravitational force at the centre of a black hole becomes infinite, and that’s nonsense.”
But who knows, maybe if humanity will build very powerful spaceships that could resist not to be torn apart by huge gravitational forces, maybe traveling to very distant regions of spacetime will be possible.
Therefore, even if somebody does create a wormhole or not, it’s safe to assume that Einstein wasn’t wrong. Traveling faster than light is impossible as far as we know, but bending spacetime to create a shortcut is plausible if we know the right method.