Galaxy with no stars

The international group of astronomers made striking discovery. Their news impressed all people interested in space science and astrology. So, according to scientists they have final proofs of existence of so called "dark matter galaxy" that consists only of black matter.
First time this space object was discovered in 2000 during the study of the galaxy NGC 4254 in the constellation Gemini. Scientists could observe strange glitter of the gas that was the sign of the interaction with another galaxy the existence of which was also proved by scientific investigations.
If it was the ordinary galaxy, it could be seen with the help of the ordinary amateur telescope. But even the most developed and modern telescope couldn't notice it.
And only now with the help of radio telescope people managed to investigate this strange space object that resulted to be "the dark matter galaxy". This galaxy doesn't have the ordinary for us matter so it doesn't have any stars.
The limits of this galaxy were fixed as well as the mass of the galaxy that is 100 milliards times bigger than the sun. The distance from Earth to this galaxy is about 50 millions light years.