Blackhole is not only what the name suggests. It is much more than just a ‘black’ ‘hole’. It is in space, that’s for sure. To further illustrate, a black hole is a body of intense gravity that does not allow anything to pass through it, not even light! It is a lot of matter trapped into a very minimal area compared to stars in its neighborhood. These are often formed by the death of stars, more significant than the size of the sun. Black holes are these giant stars squeezed into a hole-like phenomenon.
Einstein’s general theory of relativity can scientifically and mathematically explain the structure of a black hole. Einstein’s theory exhibits that when a large-sized star dies, it has its outer layers blown away. Left behind is a dense core. This core is so dense that we term it as infinite density, calling it ‘singularity’. For black holes to form, a star must be a massive one. When it dies, a smaller star’s core turns into a neutron star that is not dense enough to trap light. Scientists estimate that a star three times the size of the sun can form black holes when they die.
INFERENCE OF BLACK HOLES
Scientists can not directly observe black holes through telescopes and other instruments. It is because it emit no light, and they are smaller in size. However, scientists can study their presence by inference and effect on the stars and objects in space neighboring blackholes. If a black hole passes through a cloud of interstellar matter, it will attract the matter, called accretion. Similarly, when a typical star is close to the black hole, it is attracted. When attracted matter accelerates towards the black hole, it emits x-rays, radiates and heats up. Therefore, we can say that the blackhole significantly affects its neighborhood. The emitted radiations can damage the stars around the blackhole, stall their growth, and even generate star growth!
TIME TRAVEL WITH BLACK HOLE!
Finite means cannot solve the problem of black holes. It is a problem of infinity. Since a large matter turns into a dense core, much smaller in size, the observation seems illogical physically. To determine frameworks of this possibility, scientists have proposed quantum loop theory. This theory suggests that the space-time fabric at some part of a black hole is very strongly curved. If this proposal turns out to have truth in it, we can say that the matter can travel forward in time if it gets into the black hole! However, so far, this idea is only theoretical, and we are yet to find the actual thesis behind this idea.
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