This is one of the greatest informatic videos i have ever watched.
Blackhole is nothing but an empty space, it is a great amount of matter packed into a very small area – think of a star ten times more massive than the Sun squeezed into a sphere approximately. The result is a gravitational field so strong that nothing, not even light, can escape.
Scientists can’t directly observe black holes with telescopes that detect x-rays, light, or other forms of electromagnetic radiation. We can, however, infer the presence of black holes and study them by detecting their effect on other matter nearby. If a black hole passes through a cloud of interstellar matter, for example, it will draw matter inward in a process known as accretion. A similar process can occur if a normal star passes close to a black hole. In this case, the black hole can tear the star apart as it pulls it toward itself. As the attracted matter accelerates and heats up, it emits x-rays that radiate into space.
If we move close to EVENT HORIZON to escape from the gravitational pull of blackhole we need to move with the speed of light which is not possible, also the strong gravitation pull slow downs the Time. If we see this from earth it seems like taking thousands of years to complete because of the Light. So as we move still closer we experience SPAGHETTIFICATION, a Singularity with ‘0’ volume and infinite gravity.
Recent discoveries offer some evidence that black holes have a dramatic influence on the neighborhoods around them – emitting powerful gamma ray bursts, devouring nearby stars, and spurring the growth of new stars in some areas while stalling it in others.
Most black holes form from the remnants of a large star that dies in a supernova explosion. (Smaller stars become dense neutron stars, which are not massive enough to trap light.) If the total mass of the star is large enough (about three times the mass of the Sun), it can be proven theoretically that no force can keep the star from collapsing under the influence of gravity. However, as the star collapses, a strange thing occurs. As the surface of the star nears an imaginary surface called the “event horizon”,TIME ON THE STARS SLOWS RELATIVELY TO THE TIME KEPT BY OBSERVER FAR AWAY . When the surface reaches the event horizon, TIME STANDS STILL, and the star can collapse no more – it is a frozen collapsing object.