Using the Hubble Space Telescope, astronomers have, for the first time, directly detected the merger of star clusters at the ...

"SPT2349-56 is a system so extraordinary that we may have caught one of the most massive clusters under formation at a very ...

The Local Group is a small clustering of galaxies, a few million light-years across. Larger clusters of galaxies ... and the Sun is just another star in the Milky Way, so too have we found that ...

ULIRGs are a very rare population of galaxies with intense star formation activity. "To put this into perspective, we cannot even find a single ULIRG in our local galaxy cluster, Virgo," Zhou said.