THE MYSTERY OF "GALAXY GHOSTS"
A disturbing galaxy , provisionally called "dark", has sparked all type of speculation in the scientific community .
First, we consider it appropriate to note that galaxies are grand sets, hundreds of billions of stars, gas, and dust.
Ours is known under the name "Milky Way "and according to very conservative estimates, there could be more than a hundred billion suns , one of which is our famous Astro King .
star formation in this immense, all Solar System would be a bit lost in the cosmic ocean beaches.
About existing number of galaxies in the Universe , there are only hypotheses. But we must remember that the Hubble Space Telescope in orbit beyond the Earth's atmosphere has detected in deep space, over 50,000 million galaxies.
The richest group is the Virgin , where it is estimated that there are over 2,500 galaxy formation.
and other estimates up the ante to five hundred billion galaxies in the entire universe .
The discovery, some years ago, precisely in the great Virgo galaxy cluster , huge isolated gas cloud, dubbed Virgo HI 21 appeared to be the discovery of the prototype "dark galaxy " since no telescope used, not even the most sophisticated, could detect the slightest trace of stars in it.
His appearance belied the theory that only low-mass galaxies may lack stars, but in any case, a massive galaxy like that, which has a volume similar to the " Milky Way."
Perplexed, the astronomers developed all sorts of speculation.
finally decided to embark on a frantic search for these curious formations, which is now beginning to be called "ghost galaxies ."
Recently, a team the AIM Laboratory (Laboratoire d'Astrophysique Multi-échelle des Interactions "/ AIM / CEA / CNRS ), which includes prestigious research centers in France , with the help of numerical simulations carried out with a single processor, ie an ultramodern computer, has concluded that the formation called VIRGOHI-21 is only the result of a collision occurred between massive galaxy cluster Virgin Galactic.
The study was published in detail in the prestigious journal "The Astrophysical Journal ." And we are in a position to advance to the dear readers, in basic terms, in conclusion, this singular formation is nothing other than "gas cloud " who escaped from another galaxy, then a colossal collision cosmic, and therefore, the prototype of the ghostly "dark galaxies " does not exist.
At least I said what can be said for the moment.
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