NATURE OF THE DARK MATTER

The cosmologists create at the moment that while the central part of the galaxies are formed basically by ordinary matter, their outer regions are formed by matter that we can´t observe directly.

But one of the fundamental problems now is to discover the nature of dark matter in these outer regions.

Before the decade of the 80s it was accustomed to suppositions that this dark matter is the region of ordinary matter composed by protons, neutrons and in some form not easily detectable perhaps, as gas clouds or MACHOs- massive compact halo objects.

Nevertheless, recent studies of formacion of the galaxies make believe to the cosmologist that one part significant of the dark matter must be formed in a form different from the ordinary matter. Arises from the mass of partcules elementary very light, like the axions or the neutrinos. Can to even consist of exticas species of partculas, like the WIMPs- weakly interacting massive particles, predicted by elementary the modern teories of partculas but that has not been detected experimentally.

Ordinary matter,the material of which we and the stars are made, makes up only 5% of the mass of the universe. Another 25% of the mass of the universe is in the form of dark matter, matter we can't see but whose presence we can detect by its gravity. But it seems that 70% of the universe is in the form of what is called dark energy. A mysterious kind of matter which causes the expension of the universe to speed up.

will be our like star trek and what will be our final?

This sciencist every day is doing studies and experiencies and one of this of the 17th November 2001 says:
"The human beings is condemned to dissapear before the millenium ends." According to the British astronomer, it will be a virus and not an atomic bomb what will finish with the humans of the Earth. The sciencist offers a solution: the establishment of colonies in the space. In an interview he declares " to be more worried, long-term, for the biology "That for the nuclear weapon.

This a nuclear weapon on ipunkrock.com/diario/post/137/1856

" The danger is that, accidentaly or voluntarily, one believes a virus that it should destroy " to the human race, makes clear Hawking, teacher of Mathematics in the University of Cambridge.
" I do not believe that the man survives next 1.000 years until it disperses in the space ", assures the scientist. " Too many accidents can destroy the life in the only planet ", it continues Hawking, who adds; " But I am optimistic, we will go to the stars .

The motive of which the series star trek is so popular is that it presents a sure and recomforting vision of the future.

I am an estusiasta of this series, for which it turned out to be an easy persudirme to taking part in an episode in which I was playing to poker with Newton, Einstein and the Commander Dates back. I won all but, unfortunately, there was a red alert and I could not gather what had won.

Star trek proves to be a society very advanced with regard to ours in science, technology and political organization. In the time that goes from now till then there must have been big changes, but it is supposed that, in the period showed in ela series, the science, the technology and the organization of the society have reached a level close to the perfection

I want to question this image and to wonder if the science and the technology will manage to reach a final stationary condition. In ten thousand years passed from the last glaciation, in any moment the human species has been situated in a condition of conociemiento constant and technology fixes.