CL J1220+4918

CL J1220+4918 is a massive galaxy cluster located approximately 6 billion light-years away from Earth. It is notable for its rich collection of galaxies, hot gas, and dark matter. Galaxy clusters like CL J1220+4918 are crucial for understanding the universe's structure and evolution. They serve as laboratories for studying the formation of galaxies and the behavior of dark matter, which makes up most of the universe's mass but is invisible. Observations of such clusters enhance our knowledge of cosmology and the physical laws governing the cosmos.