Blackhole: basic concept is to know the thing which is extremely huge and dark. Actual concept is not a Blackhole it is Darkhole , before to start about it need to use correct word as we very well know that nothing in the universe is black it's just darker then other place mighty be lighter than others , mean we can't say Darkhole is only darkest thing in the universe. Will continue one the same in next time just stick on phases of Darkhole - Creation: We know there nuclear fusion of atoms and it will create supermassive atom (Any object in universe made of atom change in its properties) As we are very familiar that H(Hydrogen) fusion creates He(Helium) in this process of fusion some "mass" of both atoms realised Which converts into "Energy" not only energy it also creates some radiation ☢️ (mean nano atoms - will discuss soon) This process repeats continue until whole mass convert into massive atom (Which required 1.3% of radiation than SUN ☀️ ( which stored in core of the object (Star) this level of radiation provides massive energy which helps the object to create whole available atoms ⚛️ into a single extremely massive Atom (X ) which have super massive mass in single point (which contain mass of whole star ⭐️ within called "Darkhole" To be continue.....