Slowly, our star continues to collapse under its own gravity and shrinks further. The gravitational field will eventually become so great that nothing can escape its pull, even light. Around the black hole, a boundary in space-time is formed which is called the Event Horizon. We should be nowhere close to the event horizon because any object which falls inside this has no chance to escape from it. So it’s wise to move as far away from it as we can and observe the black hole from a peaceful area.
We cannot actually see a black hole with our naked eye or using a telescope. Because it absorbs all the light that falls on it, reflects nothing just like a perfect black body. But watch the stars around it closely. The stars close to this black hole start rotating this seemingly empty region in space. The main feature of a black hole is its interaction with other objects in its vicinity. Gas from the nearby stars, like in the case of a binary star system, feed the blackholes and make them grow stronger. Sometimes, these blackholes merge with other stars or objects, which are suspected to be main reason for the formation of Supermassive blackholes in the center of most galaxies. All the matter, that enters the event horizon is accelerated towards the exact center, called the Singularity, where the gravitational pull is so strong and matter is crushed to infinite density.
Guess we have spent enough time in the past studying the life of this star which is going to remain a blackhole for eternity. So let’s come back to the present and see if we can spot this blackhole….wink! Wink!
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