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.

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.

The dramatic impact was observed in Stephan’s Quintet, a nearby galaxy group made up of five galaxies first sighted almost 150 years ago.

Source:

WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan’s Quintet

https://academic.oup.com/mnras/article/535/3/2269/7904663?login=false