Black Holes might not exist in Universe

Black Holes might not exist in Universe 

Black Hole - A Black hole is a region of Space-Time exhibiting such strong gravitational effects that nothing can escape from the inside of it ( not even particle and electromagnetic radiations like light ). A black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star outer layer is blown away. The infinitely small points within a black hole is known as the singularity.

Black Holes are infinities wrapped in infinite objects containing an infinitely small point with an infinite density that wraps Space-Time to such a degree even light can't escape through it, so if nothing can escape through Black Hole .. can a Blackhole exist? but the researcher believes they exist but we have still never seen one. 

What if the hulking objects that form when a star collapse is something else and we consider it as a black hole, Maybe we are wrong but possibilities still exist about the existence of black hole in Universe and maybe there does not exist any Black hole in the universe. 

Here are 5 alternatives to the objects we know as the Black hole.

1. Wormholes-  A wormhole is a theoretical passage through space-time the could create shortcuts for long distance journeys across the universe. Wormholes were first theorized in 1916. In 1935, Albert Einstein and physicist Nathan Rosen used the theory of General relativity to elaborate on the idea, proposing the existence of space-time. These bridges connect two different points in space-time theoretically creating a shortcut and reduce the time and distance, the short cut came to be called Einstein Rosen Bridge, or Wormhole.

Black hole has an event horizon: a point of no return that surrounded the singularity and prevents the information from escaping through it. The wormhole has no such event horizon, instead what goes in from one side would come out from the other side.

It's even possible that the gravitational waves which we detected during the collision of two black holes are actually the waves generated during the collapsion of two wormholes. 

Recent studies in Belgium and Spain have found that the Gravitational waves generated during the spinning of two wormholes towards each other are similar to the waves generated by two black holes. 

2. Fuzzballs - A fuzzball is a black hole; spacetime, photon, and all else that is not exquisitely close to the surface of a fuzzball are thought to be affected in precisely the same fashion as with the classical model of black holes featuring a singularity at its center.

To explain the Fuzzball we will have to venture into the realm of string theory. Strings theory reimagines every particle in the universe as a tiny loop of strings that vibrates at a particular frequency, vibrates in one way we get an electron and vibrate in another way we get a quark. Fuzzballs are the strings theory's answer to the problem of black holes. Instead of a singularity surrounded by an event horizon, the whole shebang is tangled ball of strings with a fuzzy surface more like a planet than a hole.

So what happens if you fall into one or onto one as the case may be? Some say you hardly notice. The strings that make up your subatomic particle would combine with other strings to form longer strings with the same characteristics, In other words, you'd be turned into your copy of yourself embedded in the surface of the fuzzball.

3. Boson Stars - A boson star is a hypothetical astronomical object that are formed out of particles called bosons (conventional stars are formed from mostly protons, which are fermions, but also consist of Helium 4 nuclei which are boson).

Speaking of subatomic particles, one contender for an alternative to the black hole is a star made of force carrier particles called Bosons. Boson can huddle together so tightly that they become one big collective particle called a Bose. Einstein condensate that we have made in a lab here on earth, If this mysterious stuff formed a star, it'd be transparent, donut-shaped possess an intense gravitational pull. Boson star could mimic a black hole.

Just like wormholes, colliding of boson would produce a telltale echo that sensitive enough equipment might be able to detect.

4. Gravastar- Boson star might be theoretical but at least they're made of stuff we know about. Black holes are theorized to form when a massive star collapses into itself until it becomes a singularity. Gravastar is also thought to form from a collapsing star except that early on in that collapse, the star's regulate matter turns into exotic matter that keeps it from fully caving in. 

The final product would be as compact as a black hole, but not quite enough to form that tricky event horizon.

5.  Magnetospheric Eternally Collapsing Objects- In 2006 a team of researcher peered 9 billion light-years away to check out a quasar, a super - light compact object that believed to be generated by the ravenous black hole. When the team probed the structure of the quasar, something was amiss. The glowing accretion disc that surrounded the object was too wide, suggesting that it had been pushed out by magnetic forces. A black hole shouldn't have a magnetic field, and this one clearly did. That pointed to the likelihood that this wasn't a black hole, but something called MECO: a magnetospheric eternally collapsing object.

The idea here that is collapsing object gets superdense and super hot, the radiation it produces creates outward pressure that prevents its collapse, leaving it as a hot ball of plasma rather than a black hole.