A new Hubble image of the Antennae galaxies is the sharpest yet of this merging pair of galaxies. As the two galaxies smash together, thousand of millions of stars are born, mostly in groups and clusters of stars.

https://science.nasa.gov/asset/hubble/the-antennae-galaxiesngc-4038-4039/

https://www.esa.int/Science_Exploration/Space_Science/Antennae_galaxies_fertile_marriage