**BLACK HOLES: How and why.
(their SURFACE and INSIDE **(© Ángel Torregrosa Lillo)**
**[version
española]

Most
articles we have to our reach about black holes appear
without no physique-mathematical study concerning them. I
expose in this article a summary of some of the existent
knowledge about black holes and I try to contribute whith
a mathematical analysis based on the relativity theory.
Anyway I think that this article even so can be read
avoiding the mathematical apparatus, and maintaining its
attractiveness. But in extreme cases, such as the interior of black holes, even the theory of general relativity somewhat fails. In the section o the article where I talk about the non-punctual black holes, I expose a personal idea on a possible structure of this interior. |

**HOW THE
BLACK HOLES ARE FORMED**

**SPECIAL
RELATIVITY AND BLACK HOLES**

**GENERAL
RELATIVITY AND BLACK HOLES**

**SPACE-TIME
graphics on STAR COLLAPSE****
**

**HOLES In ETERNAL
FORMACION, ETERNAL BLACK HOLES And OTHER MATHEMATICAL CONCEPTS**

** BIBLIOGRAPHY
**- Albert Einstein,
"On the special theory and the general theory of the
relativity (Alianza Editorial, 1961).

- Albert Einstein, "The meaning of relativity" (Planeta Agostini, Barcelona, 1985).

- S. Weinberg, "Gravitation and cosmology" (John Wiley& Sons, New York, 1972).

- J. Audouze and another, "Astrophysics in The Recherche" (Orbis, Barcelona, 1987).

- Lloid Motz, "The Universe (their principle and their end)" (Orbis, Barcelona, 1986).

- Stefen W. Hawking, "The history of the time" (Circulo de lectores, Barcelona, 1988).

- Jayant Narlikar, "The structure of the universe" (Alianza Universidad, Madrid, 1987).

- Jayant Narlikar, "Violent Phenomenons in the universe" (Alianza Universidad, Madrid, 1987).

LITICS: