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Black Hole : The mysterious celestial object

 Black Hole : The mysterious one 

by Akshit Jain

Black hole is a thing which is also famous as the devil of the galaxy and it also plays a greater role in the formation of new galaxy . The black hole is a place in the galaxy in which the gravitational pull is the maximum . After reading this you will notice the gravitational pull of the earth but the pull by the black hole is much much much much much more then that of earth, my this blog will not be enough for the mathematical value of the gravitation pull of the black hole. As you know the gravitation force is directly proportional to the mass of the object , so , you can take the idea of the gravitation pull of black hole by its mass . The mathematical value of the mass of  the smallest black hole is 3.3 solar masses and it is also several billion time the mass of our sun . You found it strange that how the black hole get this gravitation force , in order to study it you first have to know how the black hole is formed . The black hole is not an alien thing for our scientists . The black hole was discovered in 1916 by a great scientist named Karl Schwarzschild . He was the first scientist to found the modern solution of general relativity that could characterise the black hole . The black was a star whose fuel got vanquish . Every black hole was ones a star when the fuel of the star got vanquish is got squeezed and the well known devil of the black hole is formed .Stellar black holes form when the centre of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts part of the star into space.Scientists can study stars to find out if they are flying around, or orbiting, a black hole. When a black hole and a star are close together, high-energy light is made. This kind of light can not be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light. V616 Monocerotis is the closest black hole to Earth. It is 3,000 light-years away. Black holes warp time and space, so a clock in a black hole will appear to run progressively slower to those standing outside the black hole.




Structure of black hole 

There are two basic parts to a black hole: the singularity and the event horizon. The event horizon is the "point of no return" around the black hole. It is not a physical surface, but a sphere surrounding the black hole that marks where the escape velocity is equal to the speed of light.



Einstein's theory of  general relativity



or 
The space time theory by Einstein  






Two objects exert a force of attraction on one another known as "gravity." Sir Isaac Newton quantified the gravity between two objects when he formulated his three laws of motion. The force tugging between two bodies depends on how massive each one is and how far apart the two lie. Even as the center of the Earth is pulling you toward it (keeping you firmly lodged on the ground), your center of mass is pulling back at the Earth. But the more massive body barely feels the tug from you, while with your much smaller mass you find yourself firmly rooted thanks to that same force. Yet Newton's laws assume that gravity is an innate force of an object that can act over a distance.

Albert Einstein, in his theory of special relativity, determined that the laws of physics are the same for all non-accelerating observers, and he showed that the speed of light within a vacuum is the same no matter the speed at which an observer travels. As a result, he found that space and time were interwoven into a single continuum known as space-time. Events that occur at the same time for one observer could occur at different times for another.

As he worked out the equations for his general theory of relativity, Einstein realised that massive objects caused a distortion in space-time. Imagine setting a large body in the centre of a trampoline. The body would press down into the fabric, causing it to dimple. A marble rolled around the edge would spiral inward toward the body, pulled in much the same way that the gravity of a planet pulls at rocks in space. 








I think that all of you get to know about plethora of facts about black hole and please do comment ...




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