Most people think of
the giant galaxies as islands of stars, gas and dust that block our universe
with its light. Theory, however, predicts that there are other types of
galaxies, devoid of stars, and consisting mainly of dense gas. These
"dark" galaxies you can not see on the black background of the
universe.
Now an international
team of astronomers has found a few bright galaxies, watching the glow of
hydrogen these galaxies, UV-induced nearby quasar HE0109-3518.
The study of dark
galaxies may help scientists better understand the evolution of, for example,
our Milky Way galaxy. Researchers believe that the predecessor of the Milky Way
was a small bright galaxy that merged with the nearby dark galaxies serve her
sources of gas for the formation of a large number of stars.
Observations of
galaxies were made using very large telescope in Chile, and the Digital Sky
Survey 2.
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