The black hole is the most mysterious celestial bodies in the universe, we cannot observe directly black hole, but the presence that its tremendous gravitation effect is indicating a black hole secondhand, suck the X ray radiate that when accumulating material, releases to be able to undertake study to its through the black hole.
Black hole essence is great quality star collapses after shrinking, neutron brief and pressure is overpowering also its inward gravitation, thereby collapse shrinks to surprise into dot.
At this moment, all material in the universe include to cannot break away from the attraction with bit stranger black hole to manacle solely, it is infinite like deep attraction sign trap, center of so called black hole surprises namely dot, its radius is infinitesimal, density infinity, current physics law cannot have a description to its.
Once all material enter the incident visual field of the black hole, the metropolis is inevitable fall to go to the center of the black hole, be pulled to break by tide force drag in, make the basiccest particle, the component of melt into black hole.
Even if the celestial bodies of sidereal level comes up against a black hole to also be attracted can darlingly by its, make dish of Chinese food of the black hole. So the black hole can be attracted only, won't release material? Hocking put forward black hole radiate, think the black hole also can emit particle and radiation. But this kind of hypothesis of Hocking, have not get confirming scientificly.
Somebody also does not suck the character that give only according to the black hole, put forward to still contrary Bai Dongcun is in, think white hole is to go out to be not entered only, through bug hole photograph joins between black hole and Bai Dongzhi. Return somebody to think the black hole is a spatio-temporal door even, can pass through. But above these idea are basic it is science fiction, without any observation evidence can confirm.
The welcome pays close attention to quanta lab, comment on li of opinion that leaves you please.