Scientists are people who are wondering about the physiological change of the world and its climate. Blackhole has been able to provide the science community a shock to the core. It has a massive layer of gas all around it. The scientist has been able to provide the theory that this gas had been a part of galaxies evolution for long long past. It will provide to do so in the future. In this video, you will know what is a black hole and why is it so important.