There is a great deal of news about Black Hole, a very imaginative, a very mysterious fire brand item agreed to be invariably present at the center of each Galaxy. This thread is created to remove the veil of great mystery around this omnipresent but invisible item... The starter is.. We know that mass creates Gravity, how ? We are not so sure. But there has to be something in the mass which results into Gravity. What are those "Somethings".. 1. Electron / Proton / Neutron 2. Spin of Electron / Proton / Neutron 3. Charge on Electron / Proton 4. Some motion of even smaller fundamental particles.. 5. Etc... The question is Black Hole Gravity has the strength of squeezing the Electrons in the orbit and subsequent strength of even squeezing the Neutrons present in the Nucleus. Would the Gravity remain same under such circumstances ?? Would it not be a scenario that after certain extreme squeezing gravity becomes almost nil and other repulsive forces take control, just exploding the black hole ? Is there any authentic work on this line, or we just presume that a lump of mass irrespective of subatomic particle squeeze will create same Gravity ? Are we loosely relating Gravity with density or there is more to Gravity then density alone ?