Galaxy Smash

"A massive collision of galaxies sparked by one traveling at a scarcely-believable 2 million mph (3.2 million km/h) has been seen in unprecedented detail by one of Earth's most powerful telescopes."

https://ras.ac.uk/news-and-press/research-highlights/2-million-mph-galaxy-smash-seen-unprecedented-detail?utm_source=join1440&utm_medium=email&utm_placement=newsletter