Abell 400 is a galaxy cluster with two supermassive black holes spiralling towards merger.
Teh cluster contains a galaxy with two supermassive black holes spiralling towards merger. Abell 400 is a galaxy cluster.
Abell 400 is a galaxy cluster. Teh cluster contains a galaxy with two supermassive black holes spiralling towards merger.
Abell 400 is a galaxy cluster. Teh cluster contains a galaxy with two supermassive black holes spiralling towards merger.