Hubble unveils first images of ongoing star cluster mergers near center of dwarf galaxies

A new study reports the first direct observation of merging star clusters in the nuclear region of dwarf galaxies. This detection confirms the feasibility of this formation route for nuclei in dwarf galaxies, which has long been debated. The study was published in Nature, and led by Postdoctoral Researcher Mélina Poulain from the University of Oulu, Finland.