Chinese and foreign scientists "archaeologically" reveal the brightest cluster of galaxies in the early universe. Researchers used the near-infrared seamless spectrum and a series of observation data from the International Space Telescope Hubble to discover a pair of massive and quiet galaxies that may be merging.
They have an elliptical shape, obvious Balmer and other absorption features, and live in proto-galaxy clusters. The densest region of the core. is a quiet galaxy, and the medium density region is a normal star-forming galaxy.