SUPERMASSIVE BLACKHOLES

Black holes are gigantic cosmic monsters, exotic objects whose gravity is so strong that not even light can escape their clutches. 
Black holes come in a wide variety of forms, from small stellar-mass bodies to the supermassive beasts that reside at the hearts of galaxies. They are gigantic beasts such that they can even engulf a planet within it, But humans still have no proper explanation and proof for these.....