“Star clusters reveal possible dark matter galaxy”

When you look at the night sky, all the light you see is what astronomers call ordinary matter. It represents only 15% of the matter (mass) in the universe. A mysterious substance called dark matter makes up the other 85%. So when you look at a galaxy through a telescope, all the light you see is ordinary matter. But is it possible to have a galaxy made out of dark matter? On June 20, 2025, the University of Innsbruck in Austria said researchers have discovered a dark-matter galaxy candidate in a cluster of galaxies some 240 million light-years away.








