Using data from the Hubble Space Telescope (HST), astronomers have conducted a detailed high-resolution study of a massive galaxy cluster known as SPT-CL J2106-5844. The research, presented in a paper published October 10 on arXiv.org, delivers precise mass determination of SPT-CL J2106-5844, finding that it is the most massive high-redshift galaxy cluster known to date.
Source:
https://phys.org/news/2019-10-spt-cl-j2106-massive-high-redshift-galaxy.html