SPT-CL J0546-5345

SPT-CL J0546-5345[1][2][3][4] is one of the most massive galaxy clusters ever found in the early universe.

It is thought to be 7 billion light years away.

It was discovered at the South Pole Telescope in 2008 by the Sunyaev-Zel'dovich-Effect.

Follow-up studies using the Spitzer, Chandra, and optical telescopes allowed to identify cluster members and to measure the redshift.

This galaxy-related article is a stub.