The universe is a large vast expanse of space that we cannot even fathom. We only have knowledge about a minor fraction of the entire matter that exists in the Universe. Everything else is classified as dark matter. To simplify, it’s like our planet Earth is a small dot in the enormous Universe.
In 1967, John Wheeler coined the term ‘black hole’. Black holes are the residue that is left when hyper or giant stars die. Once the stars end their life cycle and burn out the entire fuel needed for sustaining its shape and operation, the stars implode into the center and pull out abundant mass into a single point in space.
Stars. Universe has confounded mankind since ancient times. Early man would look up at the night sky and try to decipher the various shapes and figures created by groups of stars clustered together.
Have you ever accidently dropped your stuff in the deepest part of the swimming pool and then gone down to retrieve it? Isn’t it frustrating how the water always tries to push you back on the surface when you are swimming downwards? The reason for this is buoyancy.