Facebook post by University of Helsinki

Researchers have weighed the quantities of matter in galaxy clusters and thus gained a better understanding of the internal physics of galaxies. The findings will be crucial to astronomers’ efforts to measure the properties of the universe as a whole.
Scientists weigh the balance of matter in galaxy clusters | University of Helsinki helsinki.fi

Scientists used observational data to measure balance between the three main mass components that comprise galaxy clusters – dark matter, hot gas, and stars.