Most clusters in the universe today are dominated by giant elliptical galaxies in which the dust and gas has already been formed into stars. (sciencedaily.com)
NASA's Hubble Space Telescope's exquisite high resolution and ultraviolet - light sensitivity allowed the astronomers to see brilliant knots of hot, blue stars forming along the jets of active black holes found in the centers of giant elliptical galaxies. (sciencedaily.com)
There aren't any monstrous galaxies left in the modern Universe, but astronomers believe that these young galaxies matured into giant elliptical galaxies which are seen in the modern Universe. (sciencedaily.com)