Interactions between galaxies, including mergers and tidal interactions, have been extensively studied. It has been established that mergers between massive galaxies can alter galaxy morphologies, enhance star formation, and even trigger starbursts. Interactions between galaxies, including mergers and tidal interactions, have been extensively studied. It has been established that mergers between massive galaxies can alter galaxy morphologies, enhance star formation, and even trigger starbursts. Astronomy Phys.org – latest science and technology news stories