Two galaxies locked in a slow collision appear in this view of Arp 107, more than 460 million light-years away. Tidal forces have already begun to pull streams of stars and gas between them, reshaping both galaxies in a process that will last hundreds of millions of years.
The interaction has created a bridge of material linking the pair and triggered new regions of star formation, giving astronomers a clear look at how galaxies grow and change through cosmic encounters.