4 (french) Werber, Bernard

our own medical knowledge, Biology and mystical of all
backgrounds.
She told us that black holes are considered as the final
stage of a dead star and have densities extraordinary.
The pressure is such that the Earth, if it were drawn, would
be compressed to be turned into a ball of a cubic
centimeter weighing the same weight as all our planet!
- The power of black holes is staggering, said Rose.
Nothing can escape, neither matter nor radiation. In
addition, they are very difficult to spot. We do discern that
when a star is swallow. At this time, it emits X-rays that can
deduce the location of the black hole, the cemetery of the
stars that this is the cry of agony. Or an X-ray source was
noticed in the open center of our galaxy. Astrophysicists
had called Sagittarius A West. They had calculated that the
hole Black was a monster of a mass five million times
higher than that of the Sun and estimated its diameter at
seven
hundred million kilometers (2.5 light-hours, a diameter four
times smaller than our solar).
Sagittarius A West! This was perhaps the scientific name
the continent from the dead! This corner of the universe
was little known, even if it were the central hub.